(3bR,4R,6aR)-3a-({[6-Deoxy-4-O-methyl-3-O-(tetrahydrofuran-2-ylcarbonyl)-b-D-altropyranosyl]oxy}methyl)-7-formyl-1-isopropyl-4-methyl-3,3a,3b,4,5,6,6a,7-octahydro-7aH-3,7-methanocyclopenta[a]pentalene-7a-carboxylic acid AIDS-184349 AIDS184349