[
  {
    "gtc_id":	"G88880RW",
    "iupac_condensed":	"Glc(b1-2)Glc(b1-4)Gal(b1-",
    "motif":	"[{\"label\":\"Galactosylceramide\",\"id\":\"G65889KE\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	504.17
  },
  {
    "gtc_id":	"G30183UZ",
    "iupac_condensed":	"Rha(a1-2)[Glc(b1-3)]GlcA(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	502.15
  }
]