Using COc1ccc(S)cc1, CC(C)(C)OC(=O)c1nc(Cl)ccc1Cl to produce COc1ccc(Sc2ccc(Cl)nc2C(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.