Using OCc1cccc2c1ccn2Cc1ccc(Cl)cc1, C=CCOCc1cccc2c1ccn2Cc1ccc(Cl)cc1 to produce CC(O)c1cccc2c1ccn2Cc1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.