[
  {
    "gtc_id":	"G19425RP",
    "iupac_condensed":	"Rha(a1-2)Xyl(b1-2)GlcA(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	472.14
  }
]