O=C1CC(C(OCc2ccccc2)C(OCc2ccccc2)C(OCc2ccccc2)C(COCc2ccccc2)OCc2ccccc2)CC(=O)N1
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?