倍他米松杂质9
QY-BTMS-09
(9R,10S,11S,13S,16S,17R)-5'-ethyl-9-fluoro-11-hydroxy-10,13,16-trimethyl-3,3'-dioxo-3,6,7,8,9,10,11,12,13,14,15,16-dodecahydro-3'H-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-4'-yl propionate