2,3-dimethylfuro[3,2-g]chromen-7-one

pyrano[2,3-f]chromene-2,8-dione

2H,8H-苯并[1,2-b:5,4-b']二吡喃-2,8-二酮

九里香醛

(8-methoxy-2-oxo-6-prop-2-enylchromen-7-yl) acetate