CC(C)(C)OC(=O)C1C(=O)NC(=O)CC1CC(OCc1ccccc1)C(OCc1ccccc1)C(COCc1ccccc1)OCc1ccccc1
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?