(1R,2S,7R,8S)-N-{3-[6-hydroxy-3-(3-methylbutyl)-4-oxo-3-aza-tricyclo[6.2.1.02,7]undec-5-en-5-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}methanesulfonamide