Using CCOC(=O)Cl, O=S(=O)(c1ccccc1)n1ccc2nc(Cl)ccc21 to produce CCOC(=O)c1cc2nc(Cl)ccc2n1S(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.