Abiraterone Impurity 8

(3S,10R,13S)-10,13-dimethyl-17-(trifluoromethylsulfonyloxy)-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1Hcyclopenta[a]phenanthren-3-yl 2,2,2-trifluoroacetate.