[
  {
    "gtc_id":	"G31649CJ",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	416.15
  },
  {
    "gtc_id":	"G42037ZS",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	496.12
  }
]