Using Brc1ccc2c(c1)COC(N[C@@H]1CCc3ccccc31)=N2, C=C[Sn](CCCC)(CCCC)CCCC to produce C=Cc1ccc2c(c1)COC(N[C@@H]1CCc3ccccc31)=N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.