Nc1cc(/C=C/c2ccccc2)nc(/C=C/c2ccccc2)c1 mol15651 0_1 [NH3+]c1cc(/C=C/c2ccccc2)nc(/C=C/c2ccccc2)c1 mol15651 1_1 Nc1cc(/C=C/c2ccccc2)[nH+]c(/C=C/c2ccccc2)c1 mol15651 1_2