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1 ##############################################################################
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2 # #
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3 # Open Babel file: ringtyp.txt #
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4 # #
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5 # Copyright (c) 2007 Tim Vandermeersch #
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6 # Part of the Open Babel package, under the GNU General Public License (GPL)#
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7 # #
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8 # SMARTS patterns for ring typing (used by typer.cpp:OBRingTyper) #
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9 # (involved in MMFF94 atom typing, among other things) #
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10 # #
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11 # RINGTYP: used to assign the ring types #
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12 # #
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13 ##############################################################################
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14
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15 #
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16 # 5 membered rings
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17 #
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18 # ring name smarts pattern
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19 RINGTYP thiophene s1cccc1
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20 RINGTYP furan o1cccc1
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21 RINGTYP pyrrole n1cccc1
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22
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23 RINGTYP thiazole s1c[nD2]cc1
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24 RINGTYP thiazole_cation s1c[nD3]cc1 # needed by MMFF
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25 RINGTYP oxazole o1c[nD2]cc1
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26 RINGTYP oxazole_cation o1c[nD3]cc1 # needed by MMFF
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27 RINGTYP imidazole [nD3]1c[nD2]cc1
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28 RINGTYP imidazole_cation [nD3]1c[nD3]cc1 # needed by MMFF
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29
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30 RINGTYP isothiazole s1[nD2]ccc1
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31 RINGTYP isothiazole_cation s1[nD3]ccc1 # needed by MMFF
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32 RINGTYP isoxazole o1[nD2]ccc1
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33 RINGTYP isoxazole_cation o1[nD3]ccc1 # needed by MMFF
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34 RINGTYP pyrazole [nD3]1[nD2]ccc1
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35 RINGTYP pyrazole_anion [nD2]1[nD2]ccc1 # needed by MMFF
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36
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37
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38 RINGTYP 1,2,3-thiadiazole s1[nD2][nD2]cc1
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39 RINGTYP 1,2,3-thiadiazole_cation s1[nD2][nD3]cc1 # needed by MMFF
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40 RINGTYP 1,2,4-thiadiazole s1[nD2]c[nD2]c1
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41 RINGTYP 1,2,4-thiadiazole_cation s1[nD2]c[nD3]c1 # needed by MMFF
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42 RINGTYP 1,3,4-thiadiazole s1c[nD2][nD2]c1
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43 RINGTYP 1,3,4-thiadiazole_cation s1c[nD2][nD3]c1 # needed by MMFF
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44
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45 RINGTYP 1,2,3-oxadiazole o1[nD2][nD2]cc1
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46 RINGTYP 1,2,3-oxadiazole_cation o1[nD2][nD3]cc1 # needed by MMFF
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47 RINGTYP 1,2,4-oxadiazole o1[nD2]c[nD2]c1
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48 RINGTYP 1,2,4-oxadiazole_cation o1[nD2]c[nD3]c1 # needed by MMFF
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49
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50 RINGTYP 1,2,3-triazole [nD3]1[nD2][nD2]cc1
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51 RINGTYP 1,2,3-triazole_anion [nD2]1[nD2][nD2]cc1 # needed by MMFF
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52 RINGTYP 1,2,4-triazole [nD3]1[nD2]c[nD2]c1
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53 RINGTYP 1,2,4-triazole_anion [nD2]1[nD2]c[nD2]c1 # needed by MMFF
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54 RINGTYP 1,3,4-triazole [nD3]1c[nD2][nD2]c1
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55 RINGTYP 1,3,4-triazole_cation [nD3]1c[nD3][nD2]c1 # needed by MMFF
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56
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57 RINGTYP 1,2,3,4-tetrazole [nD3]1[nD2][nD2][nD2]c1
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58 RINGTYP 1,2,3,4-tetrazole_cation [nD3]1[nD2][nD2][nD3]c1 # needed by MMFF
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59 RINGTYP 1,2,3,5-tetrazole [nD3]1[nD2][nD2]c[nD2]1
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60 RINGTYP 1,2,3,5-tetrazole_anion [nD2]1[nD2][nD2]c[nD2]1 # needed by MMFF
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61
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62 #
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63 # 6 membered rings
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64 #
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65 # ring name smarts pattern
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66 RINGTYP benzene c1ccccc1
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67 RINGTYP pyridine n1ccccc1
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68 RINGTYP pyridazine n1ncccc1
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69 RINGTYP pyrimidine n1cnccc1
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70 RINGTYP pyrazine n1ccncc1
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71 #
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