Main panel: comparison between observed and corrected spectra. The cyan, gray, and pink points show the spectra as observed by Chandra, NuSTAR, and in the IR band, respectively. The blue, black, and red points show the same data corrected for absorption and the effects of dust scattering. The correction amounts to more than one order of magnitude in K and H as well as in the soft X-ray band. Inset: as in the main panel, the cyan points show the spectrum as observed by Chandra. The olive, blue, and dark red points show the Chandra spectrum after correction assuming N_H = 10²³, 1.6 × 10²³, and 2 × 10²³ cm⁻², respectively.