C41H64O14

digoxin \di*gox"in\, n. (Chem.)
   a steroid glycoside, one of the cardiotonic chemical
   substances which is extracted from the foxglove. It is a
   white, crystalline substance ({C41H64O14}), and is a
   3-substituted triglucoside of a steroid, related structurally
   to digitalin and digitoxin. It is used as a cardiotonic for
   treatment of certain heart conditions, such as congestive
   heart failure. Chemically it is

   (3[beta],5[beta],12[beta])-3-[(O-2,6-Dideoxy-[beta]-D-ribo-hexopyranosyl-(1->4)-O-2,6-dideoxy-[beta]-D-ribo-hexopyranosyl-(1->4)-2
,  6-dideoxy-[beta]-D-ribo-hexopyranosyl)oxy]-12,14-dihydroxy-card-20(22)-enolide.
   The related compounds {digitalin} and {digoxin} are also
   extracted from the foxglove ({Digitalis lanata} and
   {Digitalis purpurea}). The class of steroid glycosides having
   cardiotonic properties are refered to as the cardiac
   glycosides. --MI11
   [PJC]