Channel maps around 4 km s⁻¹ showing the spatial distribution of the emission of three different molecules: SO (stacked), ¹²CO and H₂CO, from left to right. The white contour shows the 3σ level of the SO emission, which is reported in the other channel maps for reference. The pink contours indicate the bright ring in the band 7 continuum emission (Isella et al. 2019), while the two white dots mark the position of the two protoplanets (Wang et al. 2021). The white ellipse in the bottom left side of each panel is the beam of each imaged cube.