[
  {
    "gtc_id":	"G63740AV",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	null,
    "mass":	null
  },
  {
    "gtc_id":	"G27801RM",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	1753.57
  }
]