A1D90 a1d90 (5~{R},6~{R})-6-[(~{E})-5-[(2~{S},3~{S},5~{S})-5-(2-hydroxyethyl)-3,5-dimethyl-oxolan-2-yl]-3-methyl-2-oxidanylidene-pent-3-enyl]-5-propyl-oxane-2,4-dione A1D90