Using CCNCC, O=C(O)Cc1cccc(NS(=O)(=O)c2ccc(-c3ccccc3)cc2)n1 to produce CCN(CC)C(=O)Cc1cccc(NS(=O)(=O)c2ccc(-c3ccccc3)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.