Using COS(=O)(=O)OC, Clc1ccc(-c2nccc3cn[nH]c23)c(Cl)c1 to produce Cn1cc2ccnc(-c3ccc(Cl)cc3Cl)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.