[
  {
    "gtc_id":	"G28403XF",
    "iupac_condensed":	"GlcA(b1-2)[GlcA(b1-2)[Xyl(b1-4)Man(a1-3)Man(a1-3)Man(a1-3)Man(a1-3)Man(a1-3)]Man(b1-3)]Man(a1-",
    "motif":	"[{\"label\":\"Mannose\",\"id\":\"G70323CJ\"},{\"label\":\"O-Mannose\",\"id\":\"G70323CJ\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	1636.49
  }
]