label: 1-methyl-7-(2-(5-nitro-2-furyl)vinyl)-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate, potassium salt, (E)-isomer
label_lc: 1-methyl-7-(2-(5-nitro-2-furyl)vinyl)-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate, potassium salt, (e)-isomer