(3S,4aR,6aS,10aS,10bR)-2,2-dibromo-3-methoxy-3,4a,7,7,10a-pentamethyl-2,3,4a,5,6,6a,7,8,9,10,10a-dodecahydro-1H-benzo[f]chromene

[4aR-(4aα,6aβ,10aα,10bβ)]-2-bromo-3-(bromomethyl)-4a,5,6,6a,7,8,9,10,10a,10b-decahydro-4a,7,7,10a-tetramethyl-1H-naphtho[2,1-b]pyran

[4aR-(4aα,6aβ,10aα,10bβ)]-2-bromo-4a,5,6,6a,7,8,9,10,10a,10b-decahydro-4a,7,7,10a-tetramethyl-1H-naphtho[2,1-b]pyran-3-methyl acetate