The molecule is an ethyl ester, a member of maleimides and an organic heterotricyclic compound. It derives from an ATTO 425-2.
ethyl 9-[4-[2-(2,5-dioxopyrrol-1-yl)ethylamino]-4-oxobutyl]-6,8,8-trimethyl-2-oxo-6,7-dihydropyrano[3,2-g]quinoline-3-carboxylate