\begin{table}%t1 \caption{\label{tab_mol}Molecular transitions observed with the SMA and the PdBI.} %\centerline { \begin{tabular}{ccccc} \hline \hline Transition & $\nu$ & Spec. Resol. & Detection & 3$\sigma^{a}$ \\ & (GHz) & (\kms ) & & (Jy beam$^{-1}$) \\ \hline \multicolumn{5}{c}{ SMA } \\ \CII\ (2--1) & 219.560 & 0.55 & Y & 0.18 \\ HNCO (10--9) & 219.798 & 0.55 & N & \\ H$_2$C$^{13}$O (3$_{1,2}$--2$_{1,1}$) & 219.909 & 0.55 & N & \\ SO (5$_6$--4$_5$) & 219.949 & 0.55 & Y & 0.12 \\ CH$_3$OH (8$_{0,3}$--7$_{1,3}$) & 220.079 & 0.55 & Y & 0.15 \\ HCOOCH$_3$ (17--16) & 220.167 & 0.55 & N & \\ \CI\ (2--1) & 220.399 & 0.55 & Y & 0.16 \\ CH$_3$CN (12--11) & 220.539 -- 220.747$^{b}$ & 0.55 & Y & 0.15 \\ HC$_5$N (83--82) & 220.937 & 0.55 & N & \\ CH$_3$OH (8$_{-1,8}$--7$_{0,7}$) & 229.759 & 0.53 & Y & 0.18 \\ CH$_3$OH (3$_{2,4}$--4$_{1,4}$) & 230.027 & 0.53 & N & \\ \CO\ (2--1) & 230.538 & 1.0 & Y & 0.15 \\ OCS (19--18) & 231.062 & 0.50 & Y & 0.21 \\ $^{13}$CS (5--4) & 231.220 & 0.50 & Y & 0.21 \\ CH$_3$OH (10$_{2,2}$--9$_{3,2}$) & 231.286 & 0.50 & N & \\ \D\ (3--2) & 231.321 & 0.52 & Y & 0.21 \\ CH$_3$OH (9$_{1,9}$--8$_{0,8}$) & 278.305 & 0.44 & N & \\ \H\ (3--2) & 279.512 & 0.44 & Y & 1.0 \\ OCS (23--22) & 279.685 & 0.44 & N & \\ DCO$^+$ (4--3) & 288.144 & 0.44 & N & \\ DCN (4--3) & 288.664 & 0.44 & N & \\ C$^{34}$S (6--5) & 289.209 & 0.44 & N & \\ CH$_3$OH (6--5) & 289.307 -- 290.939$^{c}$ & 0.44 & N & \\ SiS (16--15) & 290.380 & 0.44 & N & \\ \hline \multicolumn{5}{c}{PdBI} \\ \H\ (1--0) & 93.173 & 0.25 & Y & 0.03 \\ \hline \end{tabular}} \par \medskip $^a$ For the detected transitions only. \\ $^b$ Minimum and maximum frequencies corresponding to the components $K=7$ and $K=0$, respectively. \\ $^c$ Minimum and maximum frequencies corresponding to the components ($6_{0,6}{-}5_{0,5}$) and ($6_{+2,4}{-}5_{+2,3}$), respectively. \end{table}