147741-98-8 Isocajucarinolide Spiro(furan-3(2H),1'(7'H)-naphthalene)-2,7'-dione, 5-(2,5-dihydro-2-hydroxy-5-oxo-3-furanyl)-2',3',4,4',4'a,5,8',8'a-octahydro-2',5'-dimethyl-