Using COc1c(C)c(C)c(OC)c(CC[C@](C)(O)C(=O)OC2CC(C)CCC2C(C)(C)c2ccccc2)c1C to produce COc1c(C)c(C)c(OC)c(CC[C@](C)(O)C(=O)O)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.