Anmerkung
Die beobachteten Kopplungen lassen zwei Lösungen zu. Können Sie irgendwie zwischen beiden Lösungen unterscheiden?
Summary
Maybe you should start to analyze the multiplets at 0.8 and 2.6 ppm. What might be hidden behind the apparently trivial multiplet at 1.4 ppm?
Remark
One part of the substance - and as a consequence two multiplets - is rather common.
Hint
There are a bunch of protons but only two signal groups.
Remark
It's a beginner task. The solution should be not that tricky.
Remark
The weak signals at 3 ppm provide a very helpful piece of information. How could the correct signals be separated easily from the signals of impurities with almost the same signal intensity?