The title hydrate, C(19)H(34)O(13)·5H(2)O, contains a vicinally disubstituted tris-accharide in which the two terminal rhamnosyl sugar groups are positioned adjacent to each other. The conformation of the tris-accharide is described by the glycosidic torsion angles ϕ2 = 48 (1)°, ψ2 = -29 (1)°, ϕ3 = 44 (1)° and ψ3 = 4 (1)°, whereas the ψ2 torsion angle represents a conformation from the major st...