Using CCCC[Sn](CCCC)(CCCC)c1cc(SC)nc(C)n1, Clc1nc2ccccc2nc1Cl to produce CSc1cc(-c2nc3ccccc3nc2Cl)nc(C)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.