(3beta,20S,21R)-21-(4,5-Dihydro-4-methyl-3H-pyrrol-2-yl)-3-hydroxy-20-methylpregn-5-en-21-one 986-45-8 NSC 80773 Pregn-5-en-21-one, 21-(4,5-dihydro-4-methyl-3H-pyrrol-2-yl)-3-hydroxy-20-methyl-, (3beta,20S,21(R))- (9CI) Tomatillidine