1,2-Bis-[2,2-dicarboxy-penten-(4)-yl]-benzol

1,2-Bis-[2,2-dicarbethoxy-penten-(4)-yl]-benzol

1,2-Bis-[2-carboxy-penten-(4)-yl]-benzol

1,8-Dimethyl-1,2,3,4,5,6,7,8-octahydro-phenanthren-3,6-dicarbonsaeure

(1,8-dimethyl-1,2,3,4,5,6,7,8-octahydrophenanthrene-3,6-diyl)bis(methylene) bis(4-methylbenzenesulfonate)