Using CCCOc1cc(OC)c2c(c1)C(=O)c1cccc(OC(C)C)c1-2 to produce CCCOc1cc(OC)c2c(c1)C(=O)c1cccc(O)c1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.