Using CCOC(C)=O, Nc1ccc2ncn(-c3cncc(Cl)n3)c2c1 to produce Nc1ccc2ncn(-c3cncc(-c4ccncc4)n3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.