Using Clc1nc2ccccc2s1, COC(=O)c1cc2ccc(O)cc2[nH]1 to produce COC(=O)c1cc2ccc(Oc3nc4ccccc4s3)cc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.