Emission lines of N-bearing molecules CH₃CN, C₂H₅CN, C₂H₃CN, NH₂CN, NH₂CHO, and HC₃N (ν₇ = 2). The green lines indicate the observed molecular spectra of NIRS3, and the blue lines represent the LTE model spectra of detected N-bearing species. Red spectra are the LTE model spectra of all species, including detected N-bearing molecules. The systemic velocity of the spectra is 5.0 km s⁻¹.