1 9VH [(3~{S},4~{R},5~{R})-4,5-bis(oxidanyl)piperidin-3-yl]methanesulfonic acid 1.000 2 Y2W [(1~{S},2~{R},3~{R},4~{S},6~{R})-6-azanyl-2,3,4-tris(oxidanyl)cyclohexyl]methanesulfonic acid 0.750 3 PMS Phenylmethanesulfonic acid 0.714