CS(=O)(=O)N1c2ccccc2[C@]2(Br)C[C@H]3C(=O)N[C@@H](Cc4ccccc4)C(=O)N3[C@H]12
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?