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Joint Photographic Experts Group Image  |  2001-11-20  |  20.0 KB  |  480x407  |  8-bit (256 colors)
   ocr: - CH2NH2 HOON H2N NH2 - - - - OM HOCH2 - - - HO TLNHs XF H2SO4 NH2 OH D R1 HO - - - - Neomycin B (R1=H, R2=CH2NH2) Neomycin C (R1=CH2NH2, R2=H)