N6-((8R,9S)-2-(((4S)-4-ammonio-5-oxido-5-oxopentyl)amino)-8,9-dihydroxy-6-oxa-1,3-diazaspiro(4.5)dec-1-en-4-ylidene)-L-lysinate
n6-((8r,9s)-2-(((4s)-4-ammonio-5-oxido-5-oxopentyl)amino)-8,9-dihydroxy-6-oxa-1,3-diazaspiro(4.5)dec-1-en-4-ylidene)-l-lysinate