Using COCCOCCn1cc(C(=O)NCc2ccc(Cl)cc2)c(=O)c2cc(CCl)ccc21, C[S-] to produce COCCOCCn1cc(C(=O)NCc2ccc(Cl)cc2)c(=O)c2cc(CSC)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.