[
  {
    "gtc_id":	"G91582TU",
    "iupac_condensed":	"GlcA(b1-3)[GlcA(b1-3)GalA(a1-2)Rha(a1-4)]GalA(a1-2)Rha",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	1014.25
  },
  {
    "gtc_id":	"G50950IC",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G48103PH",
    "iupac_condensed":	"GlcA(b1-3)GalA(a1-2)Rha",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	516.13
  }
]