31266-85-0

Spiro[17H-dicyclopropa[1,2:6,7]cyclopenta[a]phenanthrene-17,2'(3'H)-furan]-3(1H)-one,21,21-difluoro-2,4',5',6,7,8,9,10,11,12,13,14,15,16,20,21-hexadecahydro-10,13-dimethyl-,[1S-(1a,2a,6a,7a,8a,9b,10a,13a,14b,17a)]-