Using CC(C)(C)OC(=O)N[C@H]1COCC[C@H]1Nc1nc(Cl)c2c(c1F)CN(C(=O)OC(C)(C)C)C2=O, CCCC[Sn](CCCC)(CCCC)c1cc(C2CC2)ns1 to produce CC(C)(C)OC(=O)N[C@H]1COCC[C@H]1Nc1nc(-c2cc(C3CC3)ns2)c2c(c1F)CN(C(=O)OC(C)(C)C)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.