Outflowing CO(2−1) clumps. Left panel: CO(2−1) intensity map with a cut at > 3σ. The labelled black polygons show the CO(2−1) clumps identified as cold molecular wind, i.e. not participating in the disc rotation. Right panel: blue, green, and red spectra are extracted from each molecular clump identified in the left panel, as labelled. Spectra are coloured according to the velocity shift of their peak: red with v_peak > 10 km s⁻¹, green with −10 < v_peak < 10 km s⁻¹, blue with v_peak < −10 km s⁻¹. The grey-shaded histograms show the total CO(2−1) emission above a 3σ threshold extracted from the data-cube of coarser resolution.