C. R1 = R2 = R3 = H, R4 = acyl: 4-O-(6-amino-6-deoxy-α-D-glukopyranosyl)-6-O-{3-[[(25)-4-amino-2-hydroxybutanoyl]amino]-3-deoxy-a-D-glukopyranosyl}-2-deoxy-D-streptamin,
C. R1 = R2 = R3 = H, R4 = acyl: 4-O-(6-amino-6-deoxy-α-D-glukopyranosyl)-6-O-{3-[[(25)-4-amino-2-hydroxybutanoyl]amino]-3-deoxy-a-D-glukopyranosyl}-2-deoxy-D-streptamin,