COC(=O)c1ccc(C(NC(=O)OCc2ccccc2)/C(=C/[C@@H](C)C(=O)NCc2ccc(-c3ccccc3)cc2)c2cccnc2)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?