Carbonic acid 2-(2-diethylamino-ethyl)-5-nitro-2,6-dihydro-pyrazolo[3,4,5-kl]acridin-9-yl ester ethyl ester

Octanoic acid,[2-[2-(diethylamino)ethyl]-2,6-dihydro-5-nitropyrazolo[3,4,5-kl]acridin-9-yl]ester

Benzoic acid 2-(2-diethylamino-ethyl)-5-nitro-2,6-dihydro-pyrazolo[3,4,5-kl]acridin-9-yl ester