H₂ excitation map derived from the S(1)/S(3) line ratio (see Sect. 3.3). The dashed black circle marks the region R5, also indicated in Fig. 4 and with an arrow in Fig. 7. This region has the highest temperature area on this map, with a temperature of ∼260 K. The solid black contours correspond to 0.2, 0.4, 0.6, 0.8, and 1σ of the CO(2-1) emission. The white star shows the AGN location according to the ALMA continuum.