Using C#CCBr, Cc1[nH]c2c(N3CCc4ccccc4C3)nccc2c1C to produce C=C=Cn1c(C)c(C)c2ccnc(N3CCc4ccccc4C3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.