Using C/C=C/c1cc([N+](=O)[O-])ccc1-n1cccc(Br)c1=O, CCCCC([Sn])=C(CCCC)CCCC to produce C=Cc1cccn(-c2ccc([N+](=O)[O-])cc2/C=C/C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.