CC(=O)OCC(=O)[C@@]12OC(C)(C)OC1CC1C3CC(F)C4=CC(=O)C=C[C@@]4(C)[C@@]3(F)C(O)C[C@]12C
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?