C[C@]12c3[nH]c4ccc(Cl)cc4c3CCN1C(=O)[C@@H](CC(=O)NCC13C[C@H]4C[C@@H](C1)C[C@@H](C3)C4)C[C@@H]2C(=O)N1CCOCC1
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?