O-Acetylursolic acid lactone

3-Acetoxy-11-ursen-28,13-olide

3beta-Acetoxyurs-11-en-28-oic 13(28)-lactone

3β-Acetoxy-13-hydroxyurs-11-ene-28-oic acid lactone

3β-Acetyloxy-13-hydroxyurs-11-en-28-oic acid γ-lactone