Using C=CC[Sn](CCCC)(CCCC)CCCC, NC(=O)c1c(F)ccc(OCc2nc3ccc(Br)nc3s2)c1F to produce C=CCc1ccc2nc(COc3ccc(F)c(C(N)=O)c3F)sc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.