1 C8V (2s,5r)-1-formyl-N'-[(3r)-piperidine-3-carbonyl]-5-[(sulfooxy)amino]piperidine-2-carbohydrazide 1.000 2 C9D (2s,5r)-1-formyl-N'-[(3r)-pyrrolidine-3-carbonyl]-5-[(sulfooxy)amino]piperidine-2-carbohydrazide 0.889 3 602 [[(3~{R},6~{S})-6-[(azetidin-3-ylcarbonylamino)carbamoyl]-1-methanoyl-piperidin-3-yl]amino] hydrogen sulfate 0.852 4 5VR [[(3~{R},6~{S})-6-(acetamidocarbamoyl)-1-methanoyl-piperidin-3-yl]amino] hydrogen sulfate 0.741