@article{Lee2021ApJLB, author = Lee, K.L.K., Changala, P.B., Loomis, R.A., Burkhardt, A.M., Xue, C., Cordiner, M.A., Charnley, S.B., McCarthy, M.C., McGuire, B.A., title = Interstellar detection of 2-cyanocyclopentadiene, \ce{C5H5N}, a second five-membered ring toward TMC-1, journal = Astrophysical Journal Lett., year = 2021, volume = 910, pages = 2 }