Channel maps of the CH₂DOH emission at 225 878.3 MHz (E_up/k = 35.7 K) in black contours overlaid with the HDO 3_1,2 − 2_2,1 line (E_up/k = 167.6 K) at 225 896.7 MHz in light-blue contours for a synthesized beam of . The HDO emission contours run from 10% to 90% in steps of 10% of the peak intensity (17.9 Jy beam^-1), and the dashed contours represent − 0.2 Jy beam^-1 (5σ). The CH₂DOH emission contours run from 0.08 to 0.48 Jy beam^-1 in steps of 0.08 Jy beam^-1, and the black dashed contours represent –0.04 Jy beam^-1 (1σ). The black square marks the explosion center according to Zapata et al. (2009). The positions of source BN, the Hot Core (HC), and IRc7 are marked by magenta triangles, and the positions of the deuterated methanol emission peaks (dM-1, dM-2, and dM-3) are marked by red stars.