17928-61-9

(1aS,1bR,2aR,6R,6aR,9aS,10aS)-1a,1b,2a,6a,7,9a,10,10a-Octahydro-10a-methyl-7-methylene-4H-6,3-methenofuro[3,2-c]bisoxireno[f,h]oxacycloundecin-4,8(6H)-dione