The molecule is conjugate base of 5,12-dihydroxanthommatin having anionic carboxy groups and a protonated primary amino group. It is a conjugate base of a 5,12-dihydroxanthommatin.
2-azaniumyl-4-(3-carboxy-5-oxido-1-oxo-4,12-dihydropyrido[3,2-a]phenoxazin-11-yl)-4-oxobutanoate