1,4-Etheno-3H,7H-benzo[1,2-c:3,4-c′]dipyran-3,7-dione, 9-(3-furanyl)-1,4,4a,5,6,6a,9,10,10a,10b-decahydro-4-hydroxy-4a,10a-dimethyl-, (1R,4S,4aS,6aR,9R,10aR,10bR)-
1,4-Etheno-3H,7H-benzo[1,2-c:3,4-c′]dipyran-3,7-dione, 9-(3-furanyl)-1,4,4a,5,6,6a,9,10,10a,10b-decahydro-4-hydroxy-4a,10a-dimethyl-, [1R-(1α,4β,4aα,6aα,9β,10aβ,10bα)]-
Isocolumbin
(1R,4S,4aS,6aR,9R,10aR,10bR)-9-(3-Furanyl)-1,4,4a,5,6,6a,9,10,10a,10b-decahydro-4-hydroxy-4a,10a-dimethyl-1,4-etheno-3H,7H-benzo[1,2-c:3,4-c′]dipyran-3,7-dione