AIDS-154319 AIDS154319 Lindenanolide G Propanoic acid, 2-[(4R,4aS,5S,5aR,6aS,6bS)-hexahydro-4-hydroxy-5-(hydroxymethyl)-5,6b-dimethyl-2-oxo-2H-cyclopropa[4,5]cyclopenta[1,2-b]pyran-3(4H)-ylidene]-, methyl ester, (2Z)-