One compound that contributes to the "seashore smell" at beaches in hawaii is dictyopterene d', a component of a brown edible seaweed called limu lipoa. hydrogenation of dictyopterene d' with excess h2 in the presence of a pd catalyst forms butylcycloheptane. ozonolysis with o3 followed by (ch3)2s forms ch2(cho)2, ohcch2ch(cho)2, and ch3ch2cho. what are possible structures of dictyopterene d'?