Using Clc1ncccn1, C[Sn](C)(C)c1nn(Cc2ccccc2)c2ccccc12 to produce c1ccc(Cn2nc(-c3ncccn3)c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.