5,7-dimethyl-1,3-dehydroadamantane

5,7-dimethyladamantane-1,3-diylbis(oxyethane-2,1-diyl) bis(4-nitrobenzoate)

2-(1,5-dimethyl-7-methylidenebicyclo[3.3.1]non-2-en-3-yloxy)ethyl 4-nitrobenzoate