(3S,17R,20S,22R)-5alpha-impra-15,16-ene-6-one 9-[1-(1,5-Dimethyl-piperidin-2-yl)-ethyl]-3-hydroxy-10a,11b-dimethyl-1,2,3,4,4a,6,6a,6b,9,10,10a,11,11a,11b-tetradecahydro-benzo[a]fluoren-5-one Impranine InChI=1/C28H45NO2/c1-17-6-9-25(29(5)16-17)18(2)19-7-8-22-21-13-26(31)23-12-20(30)10-11-28(23,4)24(21)15-27(22,3)14-19/h7-8,17-25,30H,6,9-16H2,1-5H3/t17-,18?,19+,20-,21?,22?,23?,24?,25?,27+,28-/m0/s rel-(3R,9R,10aS,11bS)-9-{1-[(5R)-1,5-dimethylpiperidin-2-yl]ethyl}-3-hydroxy-10a,11b-dimethyl-1,2,3,4,4a,6,6a,6b,9,10,10a,11,11a,11b-tetradecahydro-5H-benzo[a]fluoren-5-one (non-preferred name) sulfonium, hydroxy(phenylmethylene)-, inner salt, (Z)-