Using COc1cc(C(=O)N(NC(=O)c2ccc3c(c2C)OCCO3)C(C)(C)C)cc(OC)c1OC(C)=O to produce COc1cc(C(=O)N(NC(=O)c2ccc3c(c2C)OCCO3)C(C)(C)C)cc(OC)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.