a) Overlay of the CO(3–2) intensity contours (levels as in Fig. 4a) on the dust continuum emission at 349 GHz (color scale in Jy beam^-1 units as indicated). b) Same as a) but zooming in on the CND region. c) Overlay of the CO(6–5) intensity contours (levels as in Fig. 4c) on the dust continuum emission at 689 GHz (color scale in Jy beam^-1 units as indicated). The filled ellipses at the bottom right corners represent the CO beam sizes.