(Benzyloxycarbonyl)glycyl-L-proline1160-54-930 % similar Enalaprilat76420-72-930 % similar Enalapril75847-73-330 % similar Benzyloxycarbonyl-L-proline1148-11-430 % similar N-(Benzyloxycarbonyl)-D-proline6404-31-530 % similar