PRIMULIC ACID 1;BN-52020;GINKGOLIDE A;GINKGOLIDE A, GINKGO BILOBA L;1,7-DIDEOXYGINKGOLIDE C;GINKGOLIDE A FROM GINKGO LEAVES;(1R,3S,3aS,4R,6aR,7aR,7bR,8S,10aS,11aS)-3-(1,1-Dimethylethyl)hexahydro-4,7b-dihydroxy-8-methyl-9H-1,7a-(epoxymethano)-1H,6aH-cyclop
