Dear Chegg, I have a question about spectroscopy and the question is: Find the m

Question

Dear Chegg, I have a question about spectroscopy and the question is: Find the molecular formula/structure for an unknown organic species by using the Mass spectrum, IR and NMR spectrum as shown down below:

(A Chegg expert said following about the mass spectra:

Its heterocyclic compound which cannot be fragmented further by Mass Spectroscopy. Usually heterocyclic nucleus give a M+1 as a base peak. 249 is M+1 base peak with highest abundance. Without further NMR and IR spectra its quite difficult to predict the exact structure. 249 Mass can be anything.)

Now I wanna add the rest or following spectras too, so maybe I get an answer for what kind of structure it could be:

H-NMR)

and here's the same H-NMR spectrum.. Just a bit zoomed in on the peaks.

and here's the C-NMR for it)

and here's the IR-spectra for it. Hope it's enough info or spectras to get the structure now.

Explanation / Answer

structural illustrtion states about the heterocyclic compound of benzo(b)indole

but as per the peaks of the mass spectro scopy states that 247,248,249,250 these peaks are going to reveals the structures of oligo sacharides,monosachrides

as per 3 tables there is an error in the information.

thank you for asking this question.

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