(2S)-2-((1,1-dimethylethoxycarbonyl)-amino)-3-methyl-butyric acid [11beta,21-dihydroxy-3,20-dioxo-9-fluoro-16beta-methyl-17-valeroyloxy-pregna-1,4-dien-21-yl] ester (HCID 131719966)|Huagongshe