[
  {
    "gtc_id":	"G74817EA",
    "iupac_condensed":	"GlcA2N(b1-3)Bac2,4Ac2",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	421.17
  },
  {
    "gtc_id":	"G70975AS",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G68793FD",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	1650.59
  }
]