Using CC(C)(CC=O)c1ccc(F)cc1, CCCC[SnH](CCCC)CCCC to produce CCCC[Sn](CCCC)(CCCC)C(O)CC(C)(C)c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.