Observed spectra in the 112 GHz band. The intensity scale is in , not corrected for main beam efficiency. The region marked with (1 / 10) around the CO 1–0 line was scaled down by a factor 10. The main molecular transitions are labelled regardless of line detection. Transitions of vibrationally excited HC3N are labelled as v71e and v71f. The frequency scale is the observed frequency, not corrected for redshift.
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