(R)-2-((8R,16S,Z)-16-amino-16-carboxy-11-imino-6,9-dioxo-5-(5-(phosphonoamino)-1,2,4-thiadiazol-3-yl)-3-oxa-4,7,10,12-tetraazahexadec-4-en-8-yl)-5-((4-(1-methylpyridin-1-ium-4-yl)thiazol-2-yl)thio)-3,6-dihydro-2H-1,3-thiazine-4-carboxylate