label: dTDP-L-dihydrostreptose + streptidine 6-phosphate = O-(1->4)-alpha-L-dihydrostreptosyl-streptidine 6-phosphate + dTDP + H(+)
label_lc: dtdp-l-dihydrostreptose + streptidine 6-phosphate = o-(1->4)-alpha-l-dihydrostreptosyl-streptidine 6-phosphate + dtdp + h(+)