Using C=Cc1cnc2nc(-c3cc(NC(=O)c4ccco4)ccc3Cl)oc2c1 to produce CCc1cnc2nc(-c3cc(NC(=O)c4ccco4)ccc3Cl)oc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.