Using CCCCc1cnc2n1C(c1ccc(-c3ccccc3-c3nnn[nH]3)cc1)CC=C2 to produce CCCCc1cnc2n1C(c1ccc(-c3ccccc3-c3nnn[nH]3)cc1)CCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.