Using CCOP(=O)(OCC)C(N)P(=O)(OCC)OCC, O=S(=O)(Cl)c1ccccc1 to produce CCOP(=O)(OCC)C(NS(=O)(=O)c1ccccc1)P(=O)(OCC)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.