Using O=S(=O)(c1ccccc1)c1ccc2[nH]c3c(c2c1)CCN(Cc1ccccc1)CC3 to produce O=S(=O)(c1ccccc1)c1ccc2[nH]c3c(c2c1)CCNCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.