146935-36-6 4H-Pyran-4-one, 3-(4-deoxy-beta-xylo-hexopyranosyl)-2-hydroxy-6-(2-hydroxy-7-(hydroxymethyl)-1,1,5,9,11,13,17,19-octamethyl-3,5,13,15,17-heneicosapentaenyl)- Dactylfungin B