57206-54-9 Efepristin Efepristin [INN] N-((6R,9S,10R,13S,15aS,22S,24as)-6-Ethyldocosahydro-10,23-dimethyl-22-(p-(methylamino)benzyl)-5,8,12,15,17,21,24-heptaoxo-13-phenyl-12H-pyrido(2,1-f)pyrrolo(2,1-l)(1,4,7,13,16)oxapentaazacyclononadecin-9-yl)-3-hydroxypicolinamide.