CC(C)[C@H](N)C(=O)NC[C@H](CC(=O)NC[C@H]1CC[C@H](C(=O)O)CC1)c1ccc(Cl)cc1.Cl
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?