Using CC1(C)Oc2cccc([Sn](C)(C)C)c2C1=O, Cc1c(I)cnc(N)c1C#N to produce Cc1c(-c2cccc3c2C(=O)C(C)(C)O3)cnc(N)c1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.