Using CCCCCCCC[Sn](Cl)(CCCCCCCC)CCCCCCCC, [N-]=[N+]=[N-] to produce CCCCCCCC[Sn](CCCCCCCC)(CCCCCCCC)N=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.