In a chromatogram, the part that represents the aSN oligomers would depend on the specific method and conditions used to separate and detect them. However, generally speaking, the aSN oligomers would appear as peaks on the chromatogram, with their specific retention time and peak shape depending on their size, charge, and other properties. To confirm that a specific peak corresponds to aSN oligomers, it is often compared to standards or controls, and can be verified using mass spectrometry or other techniques.