(1R,3S,5R,8R,10R,11S,12R,13R,14S)-11-amino-8,12,14-trihydroxy-5-methyl-13-(methylamino)-2,4,9-trioxatricyclo[8.4.0.03,8]tetradecan-7-one; Spectinomycin Dihydrochloride Pentahydrate - Impurity E (Freebase); (2R,4aR,5aR,6S,7R,8R,9S,9aR,10aS)-6-Amino-4a,7,9-trihydroxy-2-methyl-8-(methylamino)decahydro-4H-pyrano[2,3-b][1,4]benzodioxin-4-one; (2R,4aR,5aR,6S,7R,8R,9S,9aR,10aS)-6-Amino-4a,7,9-trihydroxy-2-methyl-8-(methylamino)decahydro-4H-benzo[b]pyrano[2,3-e][1,4]dioxin-4-one