ALMA-IMF spectrum, consisting of the 12 spectral windows of the 12 m array data cubes, observed for the brightest 1.3 mm source of the G351.77 protocluster. Located at , this hot core is associated with a core that has a ~15–30 M_⊙ mass assuming optically thin thermal dust emission at T_dust = 50−100 K. The spectra have been converted to a brightness temperature scale in kelvins using the respective synthesized beam values. The brightest spectral lines are identified with colored labels.