Top: continuum-subtracted CO(1-0) spectrum extracted within a circular aperture of 5″ diameter centered on the NW galaxy. Strong broad wings of CO(1-0) line emission indicative of a molecular outflow are detected with velocities up to ±1200 km s⁻¹. Bottom: integrated CO(1-0) line emission integrated in the blue ([ − 400, −1200] km s⁻¹) and red ([ + 400, +1200] km s⁻¹) wings and the red gas blob ([ + 700, +1100] km s⁻¹) overplotted on a HST (F814W) image. The NOEMA synthesized beam is shown in the bottom-left corner. Contours correspond to 3, 5, and 10σ for the blue and red wings, and 3, 5, and 7σ for the red gas blob. An extranuclear component of the red wing is detected approximately ∼6 kpc north (projected distance) of the NW galaxy moving at ∼ + 900 km s⁻¹, but decelerating (see Fig. 4).