trimethyl 5-methoxyfuran-2,3,4-tricarboxylate

pentamethyl (1RS,2RS,5RS,8RS)-2,6,13-trimethyltetracyclo<6.2.2.22.501.7>tetradeca-3,6,9,11,13-pentaene-3,4,9,10,12-pentacarboxylate

trimethyl 6,8,10-trimethylheptalene-1,2,4-tricarboxylate

2-苯基-1H-咪唑-4,5-二甲酸二甲酯

3-(anilinomethylidene)chromene-2,4-dione