Quality of the model fit obtained with BACCHUS around the molecular lines (¹²C¹⁶O, ¹²C¹⁴N, and ¹⁶OH) and atomic lines (Mg, Al, Si, Ca, Ti, Mn, Fe, Ni, and Ce) for the star 2M17143117-2930149 (S/N = 88). The dotted black line represents the observed spectrum, while the solid colored lines correspond to synthetic spectra with abundances varying by ±0.3 dex, except for Mg, Al, Si, Ti, and Fe, whose abundances vary by ±0.5 dex. The best-fitting synthetic spectrum is shown in red. Each panel is centered on the selected lines with the dashed black lines indicating the positions of the air wavelength lines.