[
  {
    "gtc_id":	"G49845RO",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	null
  },
  {
    "gtc_id":	"G99626TV",
    "iupac_condensed":	"FucNAc(a1-?)Qui?NAc(?1-?)GalNAc(a1-?)GlcNAc(a1-",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	798.34
  },
  {
    "gtc_id":	"G81790FN",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	null,
    "mass":	null
  },
  {
    "gtc_id":	"G55553MW",
    "iupac_condensed":	null,
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	null
  }
]