1 HQB ~{N}-methyl-10-nitro-pyrido[3,4-G]quinazolin-2-amine 1.000 2 07C 2-methylsulfanyl-10-nitro-pyrido[3,4-G]quinazoline 0.810 3 6FB Pyrido[3,4-G]quinazolin-2-amine 0.700