Using C=CCC[C@@H](O)C[C@@H]1OC(=O)[C@H]1CCCCCC, O=CNCC(=O)O to produce C=CCC[C@H](C[C@@H]1OC(=O)[C@H]1CCCCCC)OC(=O)CNC=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.