COc1ccccc1CN1C(=O)[C@@H]2C(CCC(N)=O)NC3(C(=O)Nc4c3ccc(Cl)c4C)[C@@H]2C1=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?