CCCCN1CC(=O)N2[C@H](c3ccc(Cl)cc3)[C@@H]3C(=O)N(CC)C(=O)[C@@H]3[C@]2(C)C1=O
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?