28251-73-2 AIDS-030581 AIDS030581 Hexopyranoside, (7-ethenyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodecahydro-2,3-dihydroxy-1,4a,7-trimethyl-1-phenanthrenyl)methyl NSC132339 VIRESCENOSIDE A