Using CCCC[SnH](CCCC)CCCC, CC(C)(C)OC(=O)N1CCC[C@@](O)(C#CCO)[C@@H]1c1ccccc1 to produce CCCC[Sn](CCCC)(CCCC)C1=C[C@@]2(CCCN(C(=O)OC(C)(C)C)[C@H]2c2ccccc2)OC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.