COc1ccc(C(CC(=O)c2ccc(O)cc2)C(C(=O)c2ccc(O)cc2)C(c2ccc(OC)cc2)C2C(=O)NC(=S)NC2=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?