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