Using NCC1(O)CCCCC1, C=CC(=O)N1CCc2ccccc2C1C1CCCCC1 to produce O=C(CCNCC1(O)CCCCC1)N1CCc2ccccc2C1C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.