Tentative detection of g-ethyl formate, g-CH₃CH₂OC(O)H, toward G+0.693. The selected transitions are sorted by decreasing intensity and listed in Table A.3. The result of the LTE model of the g-CH₃CH₂OC(O)H emission is shown in orange, together with the expected molecular emission from all the molecular species identified to date in our survey, including g-CH₃CH₂OC(O)H (in blue), both overlaid on the observations (gray histogram). The molecular structure of g-CH₃CH₂OC(O)H is also shown (C atoms in gray, O atoms in red and H atoms in white).