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Fig. 2


Averaged spectra from IRAM 30 m line survey at 3 mm/1 mm, which are extracted from a square region ([20′′, 20′′] to [−20′′, −20′′] offset) centered on the SMA continuum peak. The spectral resolution is 0.194 MHz (0.265 km s-1 at 1 mm and 0.641 km s-1 at 3 mm). All detected lines are labeled. The “extra band” is not shown here because of less integration time and thus there is a lower signal-to-noise ratio.

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