CN N = 2–1, J = 5/2−3/2 (F = 5/2−3/2) emission distri- bution integrated between −80 and −70 kms⁻¹ (blue) and between −55 and −40 km s⁻¹ (red). The systemic velocity of the complex is about −64 kms⁻¹. The white contours represent the radio continuum at 340 GHz (12 m array). Levels are at 1, 10, 30, 60, 90, and 140 mJy beam⁻¹ . The beam of the line emission is indicated in the bottom left corner.