Using CCCC[Sn](CCCC)(CCCC)c1cnccn1, O=Cc1cc2cccc(Cl)c2nc1Cl to produce O=Cc1cc2cccc(Cl)c2nc1-c1cnccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.