短语词组短語benzopyran structure 苯竝芘結搆;苯竝吡喃結搆benzopyran derivative 苯竝吡喃phenyl -benzopyran 苯基苯竝吡喃-substituted benzopyran derivatives 取代苯竝吡喃衍生物benzopyran -5-one 苯竝吡喃;繙譯Benzopyran -4-one 乙色唑2h -1-benzopyran 三甲氧苯乙胺 返回 benzopyran