Using CC(CO)(CO)CO, CCCCCCCCON1C(C)(C)CC(=O)CC1(C)C to produce CCCCCCCCON1C(C)(C)CC2(CC1(C)C)OCC(C)(CO)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.