Cc1ccc(CNC(=O)[C@H](C)N2C(=O)N3CCc4c([nH]c5ccccc45)[C@@]3(C)C2=O)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?