19-Norlanosta-5,23-diene-11,22-dione, 3-[[2-O-(6-deoxy- .alpha.-L-mannopyranosyl)-.beta.-D-xylopyranosyl]oxy]-20,24 -epoxy-16-hydroxy-9-methyl-, (3.alpha.,9.beta.,10.alpha.,16.alpha.)- 97230-47-2 NSC694346 Picfelltarraenin IA Picfeltarraenin IA