HOP-17(21)-ENE Hop-17(21)ene solution Hopene I 5α-Hop-17(21)-ene (5aR,5bR,7aS,11aS,11bR,13aS,13bR)-3-isopropyl-5a,5b,8,8,11a,13b-hexamethyl-1,2,4,5,6,7,7a,9,10,11,11b,12,13,13a-tetradecahydrocyclopenta[a]chrysene (5aR,5bR,7aS,11aS,11bR,13aS,13bR)-5a,5b,8,8,11a,13b-hexamethyl-3-propan-2-yl-1,2,4,5,6,7,7a,9,10,11,11b,12,13,13a-tetradecahydrocyclopenta[a]chrysene A'-Neogammacer-17(21)-ene