Using COC(=O)C(Oc1c(C)c(C)c2c(c1C)C(c1ccc(C(C)C)cc1)C(C)(C)O2)c1ccccc1 to produce Cc1c(C)c2c(c(C)c1OC(C(=O)O)c1ccccc1)C(c1ccc(C(C)C)cc1)C(C)(C)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.