1 ET5 (3~{R},6~{S})-6-(aminomethyl)-4-(1,3-oxazol-5-yl)-3-(sulfooxyamino)-3,6-dihydro-2~{H}-pyridine-1-carboxylic acid 1.000 2 C8Y (2s,5r)-1-formyl-5-[(sulfooxy)amino]piperidine-2-carbonitrile 0.727