Cc1ccc(CCNC(=O)c2c[nH]c3ccc(S(=O)(=O)Nc4cccc(C(F)(F)F)c4)cc3c2=O)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?