Using CC[NH+]1C2=C(c3ccccc3)C(C)CCN2c2nc3ccccc3nc21 to produce CC[NH+]1C2=C(c3ccccc3)C(C)=CCN2c2nc3ccccc3nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.