CCCCCCCCCC(=O)OCC1OC(n2cc(F)c(=O)[nH]c2=O)C(NC(=O)OCc2ccccc2)C(OC(=O)CCCCCCCCC)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?