O=[N+]([O-])c1ccc(CSC2=C(c3ccc(Cl)cc3)S/C(=C3\SC(SCc4ccc([N+](=O)[O-])cc4)=C(c4ccc(Cl)cc4)S3)S2)cc1
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?