Top left: integrated brightness temperature of the CO(3–2) emission (grey scale) with superposed the contours of the 346 GHz continuum, to illustrate the close spatial correspondence between the radio continuum and the bright, inner molecular structure. The core (C) and the eastern and western lobe (EL and WL respectively) are indicated. Contour levels are 0.15, 0.45, 1.35, and 4.05 mJy beam^-1. The other panels show the integrated brightness temperature for CO(1–0) (top right), CO(2–1) (bottom left) and CO(3–2) (bottom right). Contour levels are 5, 10, 20, 40, ... K km s^-1 for these three panels, while also the colour stretch is the same for these three images.