55784-79-7

(3S,4S,4aβ,5R,8aα)-4,5,3,4,4a,5,6,7-Octahydro-5α-hydroxy-4,7β-dimethyldispiro[furan-3(2H),2(5H)-furan-5,8-[8H-4,8a]propano[1H-2]benzopyran]-2,3(4H)-dione