The Chemistry Development Kit (CDK) v2.0: atom typing, depiction, molecular formulas, and substructure searching.
Egon L. WillighagenJohn W. MayfieldJonathan AlvarssonArvid BergLars CarlssonNina JeliazkovaStefan KuhnTomás PluskalMiquel Rojas-ChertóOla SpjuthGilleain M. TorranceChris T. A. EveloRajarshi GuhaChristoph SteinbeckPublished in: J. Cheminformatics (2017)