5-(3,5-dimethylbenzyl)-2,2,5-trimethyl-1,3-dioxane-4,6-dione

甲基丙烯酸乙酯

间二甲苯

3,5-二甲基苯甲醛

5-(3,5-dimethylbenzyl)-2,2-dimethyl-1,3-dioxane-4,6-dione