Quinupristin
N-((6R,9S,10R,13S,15aS,18R,22S,24aS)-22-(p-(Dimethylamino)benzyl)-6-ethyldocosahydro-10,23-dimethyl-5,8,12,15,17,21,24-heptaoxo-13-phenyl-18-(((3S)-3-quinuclidinylthio)methyl)-12H-pyrido(2,1-f)pyrrolo(2,1-l)(1,4,7,10,13,16)oxapentaazacyclononadecin-9-yl)-3-hydroxypicolinamide