D-Streptamine, O-3-amino-2,3-dideoxy-alpha-D-arabino-hexopyranosyl-(1-6)-O-(2,6-diamino-2,6-dideoxy-alpha-D-glucopyranosyl-(1-4))-N1-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy-, (S)-, carbonate (2:1) (salt)