Channel maps of the (CH₃)₂CO 17_7,11 − 16_6,10 EE line (E_up/k = 110.7 K) at 223 775.3 MHz for a synthesized beam of . Contours run from 40 mJy beam^-1 (2σ) to 320 mJy beam^-1 in steps of 20 mJy beam^-1, and the dashed contours represent –20 mJy beam^-1. The bottom-right panel shows the integrated intensity (from 5 to 11 km s^-1) in contours running from 20% to 95% in steps of 15% of the peak intensity (151.3 mJy beam^-1 km s^-1). The black square marks the center of explosion according to Zapata et al. (2009). The positions of source BN, HC, IRc6/7, source I, and methyl formate peaks (MF-1 and MF-3) are marked as triangles. The positions of acetone emission peaks (Ace-1 to Ace-3) are marked as stars.