Using C=C[Sn](CCCC)(CCCC)CCCC, O=C1CCCc2nc(OS(=O)(=O)C(F)(F)F)ccc21 to produce C=Cc1ccc2c(n1)CCCC2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.