preferred_name: (4R)-4-((3S,5R,7R,8R,9S,10S,12S,13R,14S,17R)-7,12-DIHYDROXY-3-(2-(4-((8S,11R,13S,14S,17S)-17-HYDROXY-13-METHYL-3-OXO-17-PROP-1-YNYL-1,2,6,7,8,11,12,14,15,16-DECAHYDROCYCLOPENTA(A)PHENANTHREN-11-YL)-N-METHYL-ANILINO)ETHOXY)-10,13-DIMETHYL-2,3,4,5,6,7,8,9,