  We study three subregions in the HII region N11 which is located at the
northeast side of the Large Magellanic Cloud (LMC). We used $^{12}$CO and
$^{13}$CO J=3--2 data observed with the Atacama Submillimeter Telescope
Experiment (ASTE) with an angular and spectral resolution of
22$^{\prime\prime}$ and 0.11 km s$^{-1}$ respectively. From the $^{12}$CO
J=3--2 and $^{13}$CO J=3--2 integrated maps we estimated, assuming local
thermodynamic equilibrium (LTE), masses in about $10^4$ M$_\odot$ for the
molecular clouds associated with each subregion. Additionally, from the
mentioned maps we study the $^{12}$CO /$^{13}$CO integrated ratios for each
subregion, obtaining values between 8 and 10.
