Using CCOC(=O)COC1(CCC(C)C)C(=O)C=C(OC)c2ccccc21 to produce CC(C)CCC1(OCC(=O)O)C(=O)CC(=O)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.