1,4-Methano-s-indacene-3a(1H)-carboxylic acid, 8a-[[(2,6-dideoxy-3,4-O-ethylidene-b-D-glycero-hexopyranosyl)oxy]methyl]-4-formyl-4,4a,5,6,7,7a,8,8a-octahydro-7-methyl-3-(1-methylethyl)-, (4aR,7R,7aR)- AIDS-180713 AIDS180713