Using NCC1(CC(=O)O)CCCCC1, COC1(OC)CCCCC1OC(=O)Cl to produce O=C(O)CC1(CNC(=O)OC2CCCCC2=O)CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.