Components of the system are presented: the QSO, the DSFG, and the clumps (C1, C2, C3, C4, S0, and S1). Left: the map is showing the integrated value of the [CII] spectrum (moment 0) for the lower resolution combination. The beam size is 0.41″ × 0.36″ at PA = −35.69°. Solid (dashed) white contours indicate the positive (negative) significance levels at [2, 3, 4, 5, 8]σ. Middle: moment 0 for the higher resolution combination. The beam size is 0.16″ × 0.12″ at PA = −35.69°. White solid (dashed) contours indicate the positive (negative) significance levels at [2, 3, 4, 5, 8]σ. Right: the map is showing the brightest spaxel value of the [C II] spectrum for the lower resolution combination. C3 is only noticeable in one channel as it has a narrow FWHM ∼ 82 km s⁻¹. For all the panels, the synthesized beam is shown in the bottom-left corner as a white filled ellipse. North is up and east is to the left.