C[C@@H](CO)N1C[C@@H](C)[C@H](CN(C)C(=O)c2cccc(F)c2)Oc2cc(Br)ccc2S1(=O)=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?