Using C[Sn](C)(C)c1cc(N)c2cnn(S(=O)(=O)c3ccccc3)c2c1, Cc1nc(C(=O)Cl)cs1 to produce Cc1nc(C(=O)Nc2cc([Sn](C)(C)C)cc3c2cnn3S(=O)(=O)c2ccccc2)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.