Using CC1=CC(COC(c2ccccc2)(c2ccccc2)c2ccccc2)OC1=O to produce CC1=CC(COC(c2ccccc2)(c2ccccc2)c2ccccc2)OC1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.