(2R, 3S, 4R, 5R, 8R, 10R, 11R, 12S, 13S, 14R) - 2 - ethyl- 3, 4, 10, 13 - tetrahydroxy - 3, 5, 8, 10, 12, 14 -
(2R, 3S, 4R, 5R, 8R, 10R, Bovine 11R, 12S, 13S, 14R)-2- ethyl-3,4,10,13- tetrahydroxy- 3,5,8,10,12,14-