O=C([O-])C=Cc1c[nH]c[nH+]1 mol32413 0_1 O=C(O)C=Cc1c[nH]cn1 mol32413 0_2 O=C(O)C=Cc1c[nH]c[nH+]1 mol32413 1_1 OC(=[OH+])C=Cc1c[nH]cn1 mol32413 1_2 O=C([O-])C=Cc1c[nH]cn1 mol32413 -1_1 O=C(O)C=Cc1c[n-]cn1 mol32413 -1_2