[
  {
    "gtc_id":	"G77273YB",
    "iupac_condensed":	"Glc(a1-4)Gal(a1-6)Glc(a1-4)GlcA(a1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	680.2
  }
]