Observed spectra (in black), synthetic spectra (in red) and residuals (in orange) towards core #3 for all the ALMA bands. The observed spectra are integrated over the continuum cores (see Table 2). All the molecular lines detected in core #6 (see Table A.2) are indicated by black dotted lines and some of the additional molecular lines detected in core #3 are indicated in grey. The parameters used for the synthetic spectra are listed in Table 3. The Cycle 3 spectral band Cont. 1, which overlaps with Cycle 2 data Cont. 2, is ignored here.