134822-63-2 2(1H)-Pyridinone, 5-(2,5-dihydroxy-7-oxabicyclo(4.1.0)hept-2-yl)-1,4-dihydroxy-3-((1,2,4a,5,6,7,8,8a-octahydro-2-methyl-1-naphthalenyl)carbonyl)- Fischerin