10376-50-8 3-O-Acetylbetulinic acid Acetobetulinic acid Acetylbetulinic acid Betulic acid acetate Betulinic acid acetate Lup-20(29)-en-28-oic acid, 3-(acetyloxy)-, (3.beta.)- Lup-20(29)-en-28-oic acid, 3.beta.-hydroxy-, acetate NSC152533