Using CCOP(=O)(OCC)c1ccc(C(=O)O)cc1, CC(C)(C)OC(=O)Nc1ccc(-c2cccs2)cc1N to produce CCOP(=O)(OCC)c1ccc(C(=O)Nc2cc(-c3cccs3)ccc2N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.