4,7-Methano-1H-indene, 1,2,5-trichlorooctahydro-6-nitroso-dimer 4,7-Methanoindan, 1,2,5-trichlorohexahydro-6-nitroso-, stereoisomer, dimer 4,7-Methanoindan, endo-1,2,5-trichlorohexahydro-6-nitroso-, dimer 7466-09-3 NSC56123