CCOc1ccc(NC2=C(C(=O)Nc3ccc(Cl)cc3)C(=N)C(C(=O)Nc3ccccc3C#N)S2)cc1
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?