For small molecules containing two heavy tracers with similar heavy-added mass (e.g., C13 and N15, or C13 and H2), it seems that Skyline does not recognize as distinct any adducts that contain combinations of these tracers that have highly similar m/z. For example, for glutamine as the small molecule, the following transition list only gives a single M2C13-H transition instead of a separate one for each row. For high-resolution instruments we know it is possible to discriminate these. Is there a way to import a transition list into Skyline so that these appear as separate precursors?

Transition List (of 3 distinct precursors with very slightly different m/z):
Molecule Name Molecular Formula Precursor Adduct Precursor Charge
Glutamine C5H10N2O3 M2C13-H -1
Glutamine C5H10N2O3 M1C131N15-H -1
Glutamine C5H10N2O3 M1C131H2-H -1

Resulting Targets List (just 1 precursor)
Glutamine: precursor: 147.0686[M2C13-H]