[
  {
    "gtc_id":	"G26080VZ",
    "iupac_condensed":	"Glc(b1-2)Glc(b1-",
    "motif":	"[{\"label\":\"Glucosylceramide\",\"id\":\"G71142DF\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	342.12
  },
  {
    "gtc_id":	"G97951ZE",
    "iupac_condensed":	"Glc?Suc(b1-",
    "motif":	null,
    "subsumption":	null,
    "mass":	null
  }
]