[(1S)-1-[(3S,8S,9R,10R,12R,13R,14R,17S)-3,8,14,17-tetrahydroxy-10,13-dimethyl-12-[(E)-3-phenylprop-2-enoyl]oxy-1,2,3,4,7,9,11,12,15,16-decahydrocyclopenta[a]phenanthren-17-yl]ethyl] pyridine-3-carboxylate