. "(2S,3R,5R)-3-Methyl-3-(1-methyl-1H-tetrazol-5-ylsulfanylmethyl)-4,4,7-trioxo-4lambda*6*-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid" . "10h" . . . . . . . . . . . . .