二苯并[b,f]氧杂卓-10-羧酸

9,9-bis(2-ethenoxyethyl)xanthene

2-[9-(2-hydroxyethyl)xanthen-9-yl]ethanol

1-methylspiro[piperidine-4,9'-xanthene]-4'-ol

2,2'-亚甲基二苯甲醚