The mass spectrum of compound A shows the molecular ion at m/z 85, an M + 1 peak at m/z 86 of approximately 6% abundance relative to M, and an M + 2 peak at m/z 87 of less than 0.1% abundance relative to M. Assuming that compound A has only C, H, and one N atoms, determine the molecular formula, and then draw a possible structure if compound A has IR absorption at 1620-1680 cm^-1 but not at 3010-3090 cm^-1. You do not have to consider stereo chemistry.
You do not have to explicitly draw H atoms.
If more than one structure fits the description, draw them all.
Separate structures with +signs from the dropdown menu.