17008-59-2

(1E,2S)-1-{(2E)-2-[(2S)-2,6-dicarboxy-2,3-dihydropyridin-4(1H)-ylidene]ethylidene}-6-(beta-D-glucopyranosyloxy)-5-hydroxy-2,3-dihydro-1H-indolium-2-carboxylate