[
  {
    "gtc_id":	"G41669GV",
    "iupac_condensed":	"Neu5Ac4Ac(a2-3)Gal(b1-4)Glc",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	675.22
  }
]