[
  {
    "gtc_id":	"G48272KT",
    "iupac_condensed":	"GlcN4PPEtn(b1-6)GlcN(a1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	543.12
  },
  {
    "gtc_id":	"G64095NI",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G00066CT",
    "iupac_condensed":	null,
    "motif":	"[{\"label\":\"Tn antigen\",\"id\":\"G57321FI\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G85662MW",
    "iupac_condensed":	null,
    "motif":	"[{\"label\":\"Tn antigen\",\"id\":\"G57321FI\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  }
]