Channel maps of the CO 1–0, 2–1, 4–3, and 6–5 transitions (from left to right) centered at observed velocities blue-shifted with respect to systemic by −400, −300, and −200 km s⁻¹ (from top to bottom). The channel width is 100 km s⁻¹. The contour levels are 3, 4, 6, 9, 13 times the σ of each channel map (0.2, 0.2, 0.9, 4.4 mJy beam⁻¹). The color scale is saturated at 9σ to highlight emission at high velocities associated with the outflow. The solid black line is kinematic minor axis (PA =43°) derived from the kinematic model (Pereira-Santaella et al. 2016). The dashed lines delimit the area where the high-velocity molecular outflow is detected (PAs from −10° to 53°). The black cross marks the position of the nucleus derived from the ALMA continuum emission (see Pereira-Santaella et al. 2017). The physical scale at the distance of this galaxy is indicated in the lower left panel.