Using C=C[Sn](CCCC)(CCCC)CCCC, CN1Cc2c(noc2-c2onc(-c3ccccc3)c2C(F)(F)F)-c2ccc(Br)cc21 to produce C=Cc1ccc2c(c1)N(C)Cc1c-2noc1-c1onc(-c2ccccc2)c1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.