Spectrum of IRAS16293 B Band 3 data for the continuum window. A few strong lines are highlighted; for the full line identification and fitting, readers can refer to Fig. B.1. We note that “X” indicates a line that has not been identified yet and that was not (fully) fitted with the considered molecules for this work. The spectrum of IRAS16293 B is line rich even at ALMA Band 3 wavelengths (~3 mm).