[
  {
    "gtc_id":	"G06297OI",
    "iupac_condensed":	"D-Rha2Me(?1-2)[Man2Me(?1-4)GlcA2NAc(?1-4)GlcA(?1-4)Glc(?1-4)GlcA2Me(?1-4)]Man(?1-",
    "motif":	"[{\"label\":\"Mannose\",\"id\":\"G70323CJ\"},{\"label\":\"O-Mannose\",\"id\":\"G70323CJ\"}]",
    "subsumption":	"Linkage-defined saccharide",
    "mass":	1261.4
  },
  {
    "gtc_id":	"G55345ZO",
    "iupac_condensed":	"GlcA2NAc4Me(b1-4)GlcA(b1-4)Xyl2,3Ac2(b1-4)GlcA2Me(a1-2)[Rha2Me(a1-4)]Man(a1-",
    "motif":	"[{\"label\":\"Mannose\",\"id\":\"G70323CJ\"},{\"label\":\"O-Mannose\",\"id\":\"G70323CJ\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	1153.35
  },
  {
    "gtc_id":	"G04539FT",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  }
]