The chemical space of the Epi Food Chemical Database was visualized in a graphical t-SNE representation. FooDB (52,856 compounds) was included as a reference. The t-SNE was performed based The pink data points represent the pair of chemical compounds in region II of the SAS maps, which correspond to compounds very similar in structure as in profile activity. An example of this compound pair that is common in the SAS maps of the four fingerprints is apigenin vs. luteolin (comparison 1 in Figure ). These compounds have reported activity vs. HDAC1 and HDAC3, and some of the principal sources of both compounds are parsley, celery, onions, and pepper. Other examples of compounds in this region of the SAS maps are the comparisons between cyanidin vs. malvidin vs. pelargonidin (comparisons 2 and 3, respectively, in Figure ); in this case, the compounds have reported activity vs. DNMT1 and DNMT3b, and some of the principal common sources of the three compounds are blackberries, cherries, strawberries, and raspberries.