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Can someone please explain to me how to interpret and determine the molecular formula from these graphs? Please help!

Unknown C312 120 100 0 200 180 160 140 60 40 ppm Vesonances - 20
Unknown C312 LOD 1000 4E00 N00 aVEMERI 19 17 1050 17 10 2 17 074 72 053 040 60 608 72 739 70 609 77 49G 79 425 72 1467 30 143
100 Unknown C312 40 20 M+ =116 t 10 20 30 40 50 60 70 80 90 100 110 120 m/z Relative Intensity 80
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Unknown C312 aliphatic carbon Carbon attached oxyegn Carbonyl carbon 120 100 80 0 200 180 160 140 60 ppm Unknown C312 L00 C-H

100- Unknown C312 Exact Mass: 43.01 78 80- 60- Exact Mass: 73.0648 40- 20- M+ 116 20 10 30 40 50 60 80 90 100 110 120 m/z but

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