Using COC(=O)CCC(=O)OCC(C)(C)Oc1ccc2c(c1)CCc1c-2ccc2c1CCC2(C)C to produce CC(C)(COC(=O)CCC(=O)O)Oc1ccc2c(c1)CCc1c-2ccc2c1CCC2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.