COc1cnc(N)nc1N mol7300 0_1 COc1c[nH+]c(N)nc1N mol7300 1_1 COc1cnc([NH3+])nc1N mol7300 1_2 COc1cnc(N)nc1[NH3+] mol7300 1_3 COc1cnc(N)[nH+]c1N mol7300 1_4