Using CCCC[SnH](CCCC)CCCC, C=C(C(=O)OC)C1=CC=CC(=S(=O)=O)C1c1ccccc1 to produce CCCC[Sn](C=C(C(=O)OC)c1ccccc1)(CCCC)CCCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.