Using CC(=O)O[C@@H]1CCC[C@H]1OC(=O)NCC1(CC(=O)O)CCCCC1 to produce O=C(O)CC1(CNC(=O)O[C@@H]2CCC[C@H]2O)CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.