Using COC(=O)Cc1ccsc1-c1ccc(-c2sccc2CC(=O)OC)s1, O=C(Cl)c1cccs1 to produce COC(=O)Cc1ccsc1-c1ccc(-c2sc(C(=O)c3cccs3)cc2CC(=O)OC)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.