146935-35-5 2H-Pyran-2-one, 3-(4-deoxy-beta-xylo-hexopyranosyl)-4-hydroxy-6-(2-hydroxy-7-(hydroxymethyl)-1,1,5,9,11,13,17,19-octamethyl-3,5,13,15,17-heneicosapentaenyl)- Dactylfungin A