Using CCCC[Sn](CCCC)(CCCC)c1ccnc(C)c1, CCOC(=O)C(C(=O)OCC)c1cnc(Cl)c(C)c1 to produce CCOC(=O)C(C(=O)OCC)c1cnc(-c2ccnc(C)c2)c(C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.