Isolasi, Identifikasi, dan Uji Inhibisi Enzim HMG-CoA Reduktase Senyawa Bioaktif Hipolipidemik Ekstrak Etanol Daun Kejibeling = Isolation, Identification, and HMG-CoA Reductase Enzyme Inhibition Test of Hypolipidemic Bioactive Compounds of Kejibeling Leaves Ethanol Extract