2-ammonio-6-((2-((4-ammonio-5-oxido-5-oxopentyl)amino)-4,5-dihydro-1H-imidazol-5-ylidene)amino)hexanoate
2-ammonio-6-((2-((4-ammonio-5-oxido-5-oxopentyl)amino)-4,5-dihydro-1h-imidazol-5-ylidene)amino)hexanoate