For help please consult the documentation of HiCUP: https://www.bioinformatics.babraham.ac.uk/projects/hicup/read_the_docs/html/index.html
To get more information about the deduplicator visit: https://www.bioinformatics.babraham.ac.uk/projects/hicup/read_the_docs/html/index.html#hicup-deduplicator