英文同义词: | 3,3,6,6-tetramethyl-9-pyridin-4-yl-4,5,7,9-tetrahydro-2H-xanthene-1,8-dione;1H-Xanthene-1,8(2H)-dione, 3,4,5,6,7,9-hexahydro-3,3,6,6-tetramethyl-9-(4-pyridinyl)-;3,3,6,6-tetramethyl-9-(pyridin-4-yl)-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione |