All of the analytes are detected and can be verified. Chain combinations are
found in all of the cases for P-18:0/20:4, and two times for P-18:0/22:6.
The NL_plasmalogen is observed all of the times, however, the partnering NL_sn2
is infrequently observed. We refrained from using a single chain identification
based on the NL_plasmalogen, since it would introduce false positives.
Where FAs are detectable, the positions are correctly assigned.
