Using CI, O=C1CN(S(=O)(=O)c2cc3ccc(Cl)cc3s2)CCN1Cc1cc2cnccc2[nH]1 to produce Cn1c(CN2CCN(S(=O)(=O)c3cc4ccc(Cl)cc4s3)CC2=O)cc2cnccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.