"hopane" . . "Hopane" . . . . . "Hopane" . . "hopanoid" . . "A'-Neogammacerane" . . . . "(3R,3aS,5aR,5bR,7aS,11aS,11bR,13aR,13bS)-5a,5b,8,8,11a,13b-Hexamethyl-3-(propan-2-yl)icosahydro-1H-cyclopenta[a]chrysene" . . . . . "Hopane" . .