Shimadzu instrument model electrospray ionization quadrupole/quadrupole/quadrupole conversion dynode electron multiplier AKGIREKIKL VSSAGTGHFY TTTKNKRTKP EKLELKKFDP VVRQHVIYKE AKIK 785.399012 1112.5371 30.90776 789.406112 1120.551299 30.90776 366.705588 263.102633 14.160024 371.709723 263.102633 14.160024