[
  {
    "gtc_id":	"G51553FD",
    "iupac_condensed":	"Glc(b1-4)Glc(b1-4)GlcA(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	518.15
  }
]