3-((2-(Acetylamino)-2-deoxyhexopyranosyl)oxy)olean-12-en-28-oic acid AIDS-160277 AIDS160277 Aridanin NSC612236 Olean-12-en-28-oic acid, {3-[[2-(acetylamino)-2-deoxy-.beta.-D-glucopyranosyl]} oxy\]-, (3.beta.)-