Spatial distribution toward the G31.41 star-forming region of the molecular emission of CH₃CN, the broad component of CH₃OH, C₂H₅OH, the narrow component of OCS (upper panels from left to right), and HNCO, CH₃OCH₃, and NS (lower panels from left to right). We list the molecule name, the molecular transition, the energy of the upper level, and the velocity range in all panels in white. In addition, the G31.41 shock region according to region 2 of Fig. 1 in Fontani et al. (2024) is shown in green. The ultracompact HII region and the hot core of G31.41 are also labeled. The 3 and 20 σ contour levels of the 3mm continuum map at 98.5 GHz from Mininni et al. (2020) are plotted in black. The minimum flux level of the color bar of each panel is indicated by white contours.