Left: continuum map of I16293 obtained at 220.1 GHz with ALMA. The synthesized beam is shown in the bottom left corner. The rms noise is 3.6 mJy   beam^-1in the central 20″ region of the map. Contours are drawn to  − 3, 3, 10, 22, 39, 61, 88, 120, and 157 time the rms noise, where negative contours are plotted using dotted lines. The peak continuum flux densities for sources A and B are 0.539 ± 0.004 and 1.066 ± 0.004 Jy   beam^-1, respectively. Right: spectra of sources A and B are shown in the bottom and top panels, respectively. The rms noise in the line-free channels is 4.5 mJy   beam^-1. The red lines (solid and dotted) show the molecular transitions previously identified by Jørgensen et al. (2011), and the solid lines mark the transition where the inverse P-Cygni profile is found.