(6R,E)-2-hydroxy-6-((2S,4aR,4bR,6aR,7R,9aR,9bS,14aS)-2-hydroxy-4a,6a-dimethyl-11,13-dioxo-12-phenyl-2,3,4,4a,4b,5,6,6a,7,8,9,9a,12,13-tetradecahydro-1H,11H-9b,14a-ethenobenzo[c]cyclopenta[h][1,2,4]triazolo[1,2-a]cinnolin-7-yl)-2-methylhept-4-enoic acid