Using CCCC[Sn](Cl)(CCCC)CCCC, CC(C)(C)N1CCNCC1(C(=O)O)c1ccc2c(Br)c([N+](=O)[O-])ccc2n1 to produce CCCC[Sn](CCCC)(CCCC)c1c([N+](=O)[O-])ccc2nc(C3(C(=O)O)CNCCN3C(C)(C)C)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.