IMPPAT Phytochemical information: 
(1S,3'E,3a'S,6'R,8'S)-3'-Butylidene-8'-propyl-5',6,6',7-tetrahydro-3H,3'H-spiro[2-benzofuran-1,9'-[3a,6]ethano[2]benzofuran]-1',3(4'H)-dione