Cc1nc(C)c(C)c(N)c1C mol3621 0_1 Cc1nc(C)c(C)c([NH3+])c1C mol3621 1_1 Cc1[nH+]c(C)c(C)c(N)c1C mol3621 1_2 Cc1[nH+]c(C)c(C)c([NH3+])c1C mol3621 2_1