CAS No:N/A||Chemical Formula:C15H19N7O6S3||Molecular Weight:489.54000||Exact Mass:489.05589 ||(R)-2-((S)-carboxy(2-((cyanomethyl)thio)acetamido)(methoxy)methyl)-5-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid