[
  {
    "gtc_id":	"G88721SV",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G74649XE",
    "iupac_condensed":	"GlcNAc(b1-2)GlcA(b1-3)GlcNAc(a1-2)Gal-ol",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	764.27
  },
  {
    "gtc_id":	"G15335KN",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	null
  }
]