CGRtools: Python Library for Molecule, Reaction, and Condensed Graph of Reaction Processing. - Ramil I. Nugmanov; Ravil N. Mukhametgaleev; Tagir Akhmetshin; Timur Gimadiev; Valentina A. Afonina; Timur I. Madzhidov; Alexandre Varnek (J. Chem. Inf. Model., 2019)