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![Picture of Pyrido[4,3-d]pyrimidine-4,7-diamine, N4-(2-nitrophenyl)-](/images/thumbs/0033710_pyrido43-dpyrimidine-47-diamine-n4-2-nitrophenyl-_550.png "Picture of Pyrido[4,3-d]pyrimidine-4,7-diamine, N4-(2-nitrophenyl)-")
