Abiraterone Impurity 4

Chemical Name: (3S,8R,9S,10R,13S,14S)-17-ethyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate

Synonym: 2(1H)​-​Quinolinone, 7-​[4-​[4-​(3,​4-​dichlorophenyl)​-​1-​piperazinyl]​butoxy]​-​3,​4-​dihydro-; 7-[4-[4-(3,4-Dichlorophenyl)-1-piperazinyl]butoxy]-3,4-dihydro-2(1H)-quinolinone;

Smile: CCC1=CC[C@@]2([H])[C@]3([H])CC=C4C[C@@H](OC(C)=O)CC[C@]4(C)[C@@]3([H])CC[C@@]21C