2-hydroxy-4a H-3,5,8a -trimethyl-4,4a,9-tetrahydronaphtho(2,3-b)-furan-8-one
2-hydroxy-4a h-3,5,8a -trimethyl-4,4a,9-tetrahydronaphtho(2,3-b)-furan-8-one
2-hydroxy-4a H-3,5,8a -trimethyl-4,4a,9-tetrahydronaphtho(2,3-b)-furan-8-one
2-hydroxy-4a h-3,5,8a -trimethyl-4,4a,9-tetrahydronaphtho(2,3-b)-furan-8-one