1-[[[(E)-1-Oxo-9-octadecen-1-yl]oxy]methyl]-1-(hydroxymethyl)-4,7-dioxo-3,8-dioxacyclononane-6-sulfonic acid potassium salt C??? ??, ??, ??

1-[[[(E)-1-Oxo-9-octadecen-1-yl]oxy]methyl]-1-(hydroxymethyl)-4,7-dioxo-3,8-dioxacyclononane-6-sulfonic acid potassium salt ?? ?? ? ???

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1-[[[(E)-1-Oxo-9-octadecen-1-yl]oxy]methyl]-1-(hydroxymethyl)-4,7-dioxo-3,8-dioxacyclononane-6-sulfonic acid potassium salt ?? ??