Using CCCCCBr, CC1CNCCC1(C)c1cccc(-c2c[nH]nn2)c1 to produce CCCCCN1CCC(C)(c2cccc(-c3c[nH]nn3)c2)C(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.