"2-tert-ButoxycarbonylaMino-4,5,6,7-tetrahydro-benzothiazole-6-carboxylic acid ethyl ester"
"2-tert-ButoxycarbonylaMino-4,5,6,7-tetrahydro-benzothiazole-6-carboxylic acid ethyl ester"
"2-tert-ButoxycarbonylaMino-4,5,6,7-tetrahydro-benzothiazole-6-carboxylic acid ethyl ester"