Left: intensity cuts of selected molecules extracted along line crossing the two C¹⁷O peaks (close to c-C₃H₂ and CH₃OH peaks) for various species (cut 1 in Fig. 1). Right: intensity cuts extracted along a line perpendicular to other cut and crosses Herschel dust peak (cut 2 in Fig. 1). The intensity values (y-axis) are normalized to the maximum value for each species, and a constant has been added to compare the normalized intensity distributions of the different species. The vertical dotted lines show the locations of the C¹⁷O and N(H₂) peaks.