(3,5-diacetyloxy-4-formylphenyl) acetate

2,2-dimethyl-3,4-dihydro-2H-chromene-5,7-diol

5-hydroxy-8,8-dimethyl-9,10-dihydropyrano[2,3- f]chromen-2(8H)-one

间苯三酚

梨醇酯