Using C=C[Sn](CCCC)(CCCC)CCCC, CC(C)Oc1ccc(-c2onc3c2CCc2cc(Br)ccc2-3)cc1C#N to produce C=Cc1ccc2c(c1)CCc1c-2noc1-c1ccc(OC(C)C)c(C#N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.