[
  {
    "gtc_id":	"G81964GW",
    "iupac_condensed":	"Man6PEtn(a1-2)Man(a1-6)Man(a1-4)GlcNAc",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	830.26
  }
]