The molecule is a streptomycin bearing an additional hydroxy substituent at the 5'-position (on the furanose ring) It derives from a streptomycin.
2-[(1R,2R,3S,4R,5R,6S)-3-(diaminomethylideneamino)-4-[(2R,3R,4R,5S)-3-[(2S,3S,4S,5R,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine