Using COc1ccc(COCc2noc(C)c2-c2ccccc2C(=O)c2ccc(Cl)cc2)cc1 to produce Cc1onc(CO)c1-c1ccccc1C(=O)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.