D-Streptamine, O-6-amino-6-deoxy-beta-L-idopyranosyl-(1-3)-O-beta-D-ribofuranosyl-(1-5)-O-(2-amino-2,3-dideoxy-alpha-D-ribo-hexopyranosyl-(1-4))-N1-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy-, carbonate (2:1) (salt)