CN1C(=O)[C@H]2c3c([nH]c4ccccc34)[C@@H]3[C@@H](c4ccccc4N3S(=O)(=O)C(F)(F)F)[C@H]2C1=O
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?