3-(6-羟基-5,7,8-三甲基-3,4二氢苯并吡喃-2-基)丙酸甲酯

6-hydroxy-5,7,8-trimethyl-3,4-dihydrochromen-2-one

2-methoxy-2,5,7,8-tetramethyl-3,4-dihydrochromen-6-ol