O=C(O)C(=O)O.O=S(=O)(c1ccc(Cl)c(C(F)(F)F)c1)N1CCN(CC(O)COCC2CCCO2)CC1
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?