O=S(=O)(c1ccccc1)[C@@]1(c2ccc(Br)cc2)C[C@@H]2ON=C(c3cccc(Br)c3)[C@@H]2C1
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?