Supplementary material for "Unveiling the enigma of the Nakashima-Deguchi object (IRAS 19312+1950): an Orion KL analog revealed"

Observed SMA spectrum of MM1 in NDO (aka, IRAS 19312+1950). The best-fit LTE synthetic spectrum is displayed in red and overlaid on the observed spectrum shown in black. The identified spectral features are labeled with the names of their corresponding molecules, while those of unknown origin are designated as "U".