111374-21-1 6-(1-Pyrrolidinyl)-N-(1H-5-tetrazolyl)pyrazine-2-carboxamide 6-(1-Pyrrolidinyl)-N-1H-tetrazol-5-ylpyrazinecarboxamide Hsr 6071 Pyrazinecarboxamide, 6-(1-pyrrolidinyl)-N-1H-tetrazol-5-yl-