trans-2-<6-carboxyhex-2(Z)-enyl>-3-formylbicyclo<2.2.2>octane

((2R,3R)-3-[1,3]Dioxolan-2-yl-bicyclo[2.2.2]oct-2-yl)-acetonitrile

trans-2-(formylmethyl)-3-<(dioxyethylene)methyl>bicyclo<2.2.2>octane

(Z)-7-((2R,3R)-3-[1,3]Dioxolan-2-yl-bicyclo[2.2.2]oct-2-yl)-hept-5-enoic acid