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Table 1

Molecular species detected in the M8 region.

Carbon chains S-bearing O-bearing N-bearing Deuterated COMs Others
C-C3 H2 SO H2CO CN HDCO CH3OH SiO
C2 H 34 SO H213CO${\rm{H}}_2^{13}{\rm{CO}}$ 13CN C2 D 13CH3OH CF+
C13 CH H2S HCO N2 H+ DCO+ CH3SH
C4 H HCS+ HCO+ HCN N2 D+ CH3CHO
HC3 N H2CS H13 CO+ H13CN DNC CH3C2H
H13CCCN H234CS${\rm{H}}_2^{34}{\rm{CS}}$ HC18 O+ HC15N DCN CH3CN
HC13CCN SO2 CO HNC DC3N
HCC13CN SO+ 13CO HN13C NH2D
HCCC15 N NS C17 O H15NC HDCS
c-C3H OCS C18O HNCO
C3 H+ CS 13C18O HCNO
HC5N 13CS H2C2O NO
C33S t-HCO2H
C34S
13C34S
C2S

Notes. With the exception of N2D+, all species are detected in clump E. Here, some of the listed N-bearing species also contain an O atom.

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