Using CCCC[Sn](Cl)(CCCC)CCCC, c1ccc(COCn2ncnn2)cc1 to produce CCCC[Sn](CCCC)(CCCC)c1nnn(COCc2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.