Cc1nc2c(=N)ncn(C)c2nc1C mol4777 0_1 Cc1nc2c(=N)[nH+]cn(C)c2nc1C mol4777 1_1 Cc1nc2c(=N)ncn(C)c2[nH+]c1C mol4777 1_2 Cc1nc2c(=[NH2+])ncn(C)c2nc1C mol4777 1_3 Cc1nc2c([nH+]c1C)c(=N)ncn2C mol4777 1_4