file.name	strain.no	strain
SpeciesC_StrainX_1.mzXML	1	X
SpeciesC_StrainX_2.mzXML	1	X
SpeciesC_StrainX_3.mzXML	1	X
SpeciesC_StrainY_1.mzXML	2	Y
SpeciesC_StrainY_2.mzXML	2	Y
SpeciesC_StrainY_3.mzXML	2	Y