N-[4-[[(4-Amino-9,10-dihydro-9,10-dioxo-3-sulfoanthracen)-1-yl]amino]phenyl]-β-alanine

N-[4-[(4-amino-9,10-dihydro-9,10-dioxo-3-sulphoanthracen-1-yl)amino]phenyl]-beta-alanine