COC(=O)[C@H](Cc1c[nH]c2ccccc12)NC(=O)c1ccc(CNC(=O)/C(C)=C/c2ccccc2)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?