4-carboxy-5,6-dihydro-5-methylene-α-[[2-(1H-tetrazol-1-yl)acetyl]amino]-2H-1,3-Thiazine-2-acetic acid sodium salt
4-carboxy-5,6-dihydro-5-methylene-α-[[2-(1H-tetrazol-1-yl)acetyl]amino]-2H-1,3-Thiazine-2-acetic acid sodium salt