Home6-(tert-Butyl)-3-methyl-2-amino-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate6-(tert-Butyl)-3-methyl-2-amino-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate