3-((2,6-Dideoxy-4-O-(2,6-dideoxy-4-O-(2,6-dideoxy-4-O-(2,6-dideoxy-3-O-methylhexopyranosyl)-3-O-methylhexopyranosyl)-3-O-methylhexopyranosyl)hexopyranosyl)oxy)-8,14,17-trihydroxy-20-oxopregn-5-en-12-y\tl 3-phenylacrylate AIDS-149566 AIDS149566 NSC684428