Synonyms: 9,19-Cyclo-5a,9b-pregn-6-en-16a-ol, 3b-(dimethylamino)-4,4,14-trimethyl-20a-(methylamino)-, 2-methylcrotonate (ester), (E)-(8CI); 9,19-Cyclopregn-6-en-16-ol,3-(dimethylamino)-4,4,14-trimethyl-20-(methylamino)-, 2-methyl-2-butenoate(ester), [3b,5a,16a(E),20S]-; 1H,19H-Cyclopropa[9,10]cyclopenta[a]phenanthrene,9,19-cyclopregn-6-en-16-ol deriv.; Crotonic acid, 2-methyl-, 3b-(dimethylamino)-4,4,14-trimethyl-20a-(methylamino)-9,19-cyclo-5a,9b-pregn-6-en-16a-yl ester, (E)-; Cyclovirobuxeine B, tigloyl-;Tigloylcyclovirobuxeine B