A featureGroupsSet objectHierarchy:featureGroups    |-- featureGroupsSet      |-- featureGroupsScreeningSet---Algorithm: greedy-setFeature groups: M98_R13_1, M99_R7_2, M99_R188_3, M99_R23_4, M99_R5_5, M101_R28_6, ... (158 total)Features: 586 (3.7 per group)Has IMS data: noHas normalized intensities: FALSEInternal standards used for normalization: noPredicted concentrations: nonePredicted toxicities: noneAnalyses: solvent-pos-1, solvent-pos-2, solvent-pos-3, standard-pos-1, standard-pos-2, standard-pos-3, ... (12 total)Replicates: solvent-pos, standard-pos, solvent-neg, standard-neg (4 total)Replicates used as blank: solvent-pos, solvent-neg (2 total)Sets: positive, negative