CH₂DOH 12_(2,11)→12_(1,12) transition at 301.514 GHz (indicated by dash-dotted lines) detected towards each region. Frequencies are shifted to the rest frame of the individual regions. Blue and green lines represent the modelled spectra of CH₂DOH with and without blending, i.e., including and excluding the contribution from CH₃NC, respectively. Yellow lines represent the modelled spectra of CH₃NC and magenta lines represent the sum of the spectra of CH₂DOH with blending and CH₃NC.