Using COc1ccc(-c2oc3ncnc(Cl)c3c2-c2ccccc2)cc1 to produce Oc1ccc(-c2oc3ncnc(Cl)c3c2-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.