Using Cc1cnc(Cl)nc1C, C[Sn](C)(C)c1nn(Cc2ccccc2)c2ccccc12 to produce Cc1cnc(-c2nn(Cc3ccccc3)c3ccccc23)nc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.