COc1ccc(NC(=O)N(C)C[C@H]2Oc3ccc(NC(=O)Nc4ccc5c(c4)OCO5)cc3C(=O)N([C@H](C)CO)C[C@@H]2C)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?