[
  {
    "gtc_id":	"G23823OG",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G99148RI",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	496.11
  }
]