Using NCCN1CCOCC1, O=C(O)CCc1c(C=C2C(=O)Nc3ccccc32)[nH]c2c1CCCC2 to produce O=C(CCc1c(C=C2C(=O)Nc3ccccc32)[nH]c2c1CCCC2)NCCN1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.