4-Benzoyloxy-1,8-dibrom-10-oxatricyclo<6.3.2.09,11>tridec-12-en-12,13-dicarbonsaeure-diethylester

1-Ethoxy-1,3,6,7,8,9,10,11-octahydro-5-hydroxy-3,8-dioxo-cyclodecafuran-4-carbonsaeure-ethylester

10-Oxabicyclo[6.3.2]trideca-1(11),8,12-triene-12,13-dicarboxylic acid,4-hydroxy-, diethyl ester, stereoisomer

4-Hydroxy-10-oxabicyclo<6.3.2>trideca-1(11),8,12-trien-12,13-dicarbonsaeure-diethylester

1a,2a,3a,5a-Tetrahydro-8-oxo-3a,5a-hexanodioxirenooxepin-4,5-dicarbonsaeure-diethylester