1a,6a-dihydrospiro[indeno[1,2-b]oxirene-6,2'-[1,3]dioxolane]

2-硝基-1,3-茚二酮

2-hydroxy-2-(9-methoxy-9H-fluoren-9-yl)-1H-indene-1,3(2H)-dione

2-hydroxy-1,1',3,3'-tetraoxo-1',2,3,3'-tetrahydro-1H,2'H-[2,2'-biinden]-2'-yl formate

Acetylhydrindantin