.beta.-Amyrenyl acetate .beta.-Amyrin acetate 1616-93-9 3-O-Acetyl-.beta.-amyrin AMYRIN, ACETATE, B- NSC403166 O-Acetyl-.beta.-amyrin Olean-12-en-3-ol, acetate, (3.beta.)- Olean-12-en-3.beta.-ol, acetate