C=C[C@@H]1c2ccccc2N(S(=O)(=O)c2ccc(C)cc2)[C@H](c2ccccc2C(F)(F)F)C1(C#N)C#N
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?