[
  {
    "gtc_id":	"G53882XD",
    "iupac_condensed":	"Rha(a1-3)[Xyl(b1-4)]Glc(b1-",
    "motif":	"[{\"label\":\"Glucosylceramide\",\"id\":\"G71142DF\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	458.16
  },
  {
    "gtc_id":	"G47890VY",
    "iupac_condensed":	"Rha(a1-3)[Xyl(b1-4)]GlcA(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	472.14
  },
  {
    "gtc_id":	"G08854EU",
    "iupac_condensed":	"Rha(a1-3)[Xyl(b1-4)]GlcA6Me(b1-",
    "motif":	null,
    "subsumption":	"Fully-defined saccharide",
    "mass":	486.16
  }
]