4-Hydroxy-2,2,9-trimethyl-3,4-dihydro-2H-pyrano[3,2-c]chromen-5-one

4-羟基-6-甲基香豆素

2,2,9-trimethyl-3,4-dihydropyrano[3,2-c]chromen-5-one

2,2,9-trimethyl-2,3-dihydro-pyrano[3,2-c]chromene-4,5-dione

2-甲基-3-丁烯-2-醇