2-benzyloxy-benzoic acid-[N-(1-methyl-[4]piperidyl)-hydrazide]
2-benzyloxy-benzoic acid-[isopropylidene-(1-methyl-[4]piperidyl)-hydrazide]
3-isopropylidene-2-(1-methyl-[4]piperidyl)-carbazic acid phenyl ester
benzoic acid-[isopropylidene-(1-methyl-[4]piperidyl)-hydrazide]
2-(1-methyl-[4]piperidyl)-carbazic acid phenyl ester