127318-97-2
4-乙基-7,8-二氢螺[1,3]二氧戊环-2,6-吡喃并[3,4-f]吲哚嗪-3,10(1H,4H)-二酮
4-ethyl-7,8-dihydrospiro[1,3]dioxolane-2,6-pyrano[3,4-f]indolizine-3,10(1H,4H)-dione
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