Using C=C[Sn](CCCC)(CCCC)CCCC, Cc1c(-c2ccccn2)nc2cc(F)ccc2c1N1CC2(CCOCC2)c2nc(Br)c(N3CCOCC3)cc21 to produce C=Cc1nc2c(cc1N1CCOCC1)N(c1c(C)c(-c3ccccn3)nc3cc(F)ccc13)CC21CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.