CC1OC(CC2C=CCc3c(O)c4c(c(O)c32)C(=O)c2ccccc2C4=O)CC(NC(=O)C(F)(F)F)C1O
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?