Left. ALMA CO morphology shown on top of our CFHT K-band continuum image (H11). Dotted boxes mark the two ALMA mosaics, the solid box marks the overlap region. Right. H₂ 1−0 S(1) morphology as seen with SINFONI. Boxes mark individual SINFONI fields-of-view, contours show CO(3−2) from 2 to 42 Jy  km s^-1 beam^-1 in steps of 8 Jy km s^-1 beam^-1. The inset at the bottom left of the right panel shows the ALMA beam. We also mark massive and young SSCs (asterisks), and the compact H₂ source PCC discussed in Sect. 3.