CC(=O)Oc1cc2c(cc1OCC(F)(F)F)[C@H]1CC[C@]3(C)[C@@H](OC(C)=O)CC[C@H]3[C@@H]1CC2=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?