label: 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-thiocarboxamide + 10-formyldihydrofolate => 6-thio-IMP + 7,8-dihydrofolate + H2O
label_lc: 5-amino-1-(5-phospho-d-ribosyl)imidazole-4-thiocarboxamide + 10-formyldihydrofolate => 6-thio-imp + 7,8-dihydrofolate + h2o