Using COc1nc(/C(=C/CO)c2ccc(C(C)(C)C)cc2)ccc1Cl, Oc1ccccc1 to produce COc1nc(/C(=C/COc2ccccc2)c2ccc(C(C)(C)C)cc2)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.