Using CC1(C)CCCC(OS(=O)(=O)C(F)(F)F)=C1CC(=O)OCc1ccccc1, C=CC[SnH3] to produce C=CCC1=C(CC(=O)OCc2ccccc2)C(C)(C)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.