Synonyms: 20,21-Secooleanane;Chrysene, 8-ethyloctadecahydro-1,1,4a,8,10a,10b-hexamethyl-7-(2-methylpropyl)-,[4aS-(4aa,4bb,6aa,7b,8b,10ab,10ba,12ab)]-; [4aS-(4aa,4bb,6aa,7b,8b,10ab,10ba,12ab)]-8-Ethyloctadecahydro-1,1,4a,8,10a,10b-hexamethyl-7-(2-methylpropyl)chrysene