CC1=CC2OC3CC4OC(=O)/C=C\C=C\C(C(C)O)OCC(O)C(C)CC(=O)OCC2(CC1O)C4(C)C31CO1
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?