[
  {
    "gtc_id":	"G16235VG",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G60511GB",
    "iupac_condensed":	"GlcA(b1-3)GlcNAc(b1-4)GlcA(b1-3)GlcNAc(b1-4)GlcA(b1-3)GlcNAc(b1-4)GlcA(b1-3)GlcNAc(b1-4)GlcA(b1-3)GlcNAc(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	1913.57
  }
]