CS(2−1) blue-shifted (4.65 – 7.24 km s⁻¹) integrated intensity map (contours) overlaid on the HC₃N(11−10) integrated intensity map (background, colorbar saturated between 0 and 15 mJy beam⁻¹ km s⁻¹). The contour levels are 30σ to 45σ by 5σ steps then 45σ to 125σ by 10σ steps where σ = 1.0 mJy beam⁻¹ km s⁻¹. The two axis of the quadrupolar flow are denoted with dashed red lines. The synthesized beams are displayed in the lower left corner. The scale bar on the bottom right corner indicates 1000 au.