SEARCH Articles Figures Tables Acetyl Groups Located on Different Rings Acetyl Groups Located on One Ring Acyl Groups Located on Different Rings Acyl Groups Located on One Ring Carbonyl Groups Located on Different Rings Carbonyl Groups Located on the Same Ring Hydroxy Groups Located on Both Rings Hydroxy Groups Located on One Ring Hydroxy Groups Located on the Same Ring Isobutyryl Groups Located on Different Rings Isobutyryl Groups Located on the Same Ring Mold locating ring Mold parts Locating ring Propionyl Groups Located on Different Rings Propionyl Groups Located on the Same Ring Substituents Located on Both Rings Substituents Located on One Ring Substituents Located on the Hydroxylated Ring Substituents Located on the Other Ring