Using COCOc1ccc(C=CC(=O)c2c(OCOC)cc(OCOC)c(CCC(C)C)c2O)cc1 to produce CC(C)CCc1c(O)cc(O)c(C(=O)C=Cc2ccc(O)cc2)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.