CC1(C)[NH+]=C(NCCN)C(C)(C)[NH+]1[O] mol34914 2_1 CC1(C)[NH+]=C(NCC[NH3+])C(C)(C)N1[O] mol34914 2_2 CC1(C)N=C(NCC[NH3+])C(C)(C)[NH+]1[O] mol34914 2_3 CC1(C)[NH+]=C(NCC[NH3+])C(C)(C)[NH+]1[O] mol34914 3_1