[
  {
    "gtc_id":	"G69850FN",
    "iupac_condensed":	"Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-",
    "motif":	"[{\"label\":\"Glucosylceramide\",\"id\":\"G71142DF\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	1476.49
  },
  {
    "gtc_id":	"G78600GX",
    "iupac_condensed":	"Glc(?1-2)Gal(?1-",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	342.12
  },
  {
    "gtc_id":	"G15021LG",
    "iupac_condensed":	"Glc(?1-",
    "motif":	null,
    "subsumption":	null,
    "mass":	null
  }
]