PDBe CCDUtils: an RDKit-based toolkit for handling and analysing small molecules in the Protein Data Bank. - Ibrahim Roshan Kunnakkattu; Preeti Choudhary; Lukás Pravda; Nurul Nadzirin; Oliver S. Smart; Qi Yuan; Stephen Anyango; Sreenath Nair; Mihaly Varadi; Sameer Velankar (J. Cheminformatics, 2023)