[
  {
    "gtc_id":	"G14067CX",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G76581XX",
    "iupac_condensed":	"Glc6P(b1-3)D-FucNAc4N(a1-4)GalNAc(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	649.21
  },
  {
    "gtc_id":	"G36264YB",
    "iupac_condensed":	"Glc6P(b1-3)D-FucNAc4N(a1-4)GalNAc(a1-",
    "motif":	"[{\"label\":\"Tn antigen\",\"id\":\"G57321FI\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	649.21
  }
]