COCCCN1C2=C(C(=O)CC(C)(C)C2)C(c2ccc(OC)c(OC)c2)C2=C1CC(C)(C)CC2=O
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?