(2R,4aR,5aR,6S,7S,8R,9S,9aR,10aS)-4a,7,9-trihydroxy-2-methyl-6,8-bis(methylamino)decahydro-4H-benzo[b]pyrano[2,3-e][1,4]dioxin-4-one dihydrochloride;