Using O=C(NC1CCNCC1)c1ccccc1, O=C(CCl)c1ccc2c(c1)CCCC2 to produce O=C(CN1CCC(NC(=O)c2ccccc2)CC1)c1ccc2c(c1)CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.