Selection of species at 3 different velocities (here ∼2.5 km s⁻¹). There are no data for D₂CO and NH₂D due to line blending and for C₂H₅OH and c-C₂H₄O owing to lack of emission, i.e., maximum signal less than 10% of the peak emission. NO is partly masked, due to line blending. The top left corner indicates the channel velocity, the species, and its upper energy level. The white contours are 10 to 90% of the peak emission of the strongest channel for that species. The yellow arrows starting from the explosion center (red eight-pointed star) suggest possible displacement of gas linked to the explosive event, which occurred ∼550 years ago. The species shown in the top three rows such extensions, while the two bottom rows do not. The molecular species transitions are listed in Table B.1. All are channel maps of 488 kHz width (0.59–0.69 km s⁻¹)