COc1cc(/C=C/C2=NN(c3cccc(S(=O)(=O)O)c3)C3(C2)SCC(=O)N3c2nc3ccccc3s2)cc(OC)c1OC
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?