Fig. 2
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Spectra of sources A+B (top panel) and the brightest H2 knots (lower panel) extracted from the apertures shown in Fig. 1. Flux offsets of −2.5 and −5.0 mJy are applied to the spectra of S2 and S3 respectively. In contrast with the A+B spectrum, no molecular lines other than H2, CO, and OH in S1 are detected towards the H2 knots.
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