[
  {
    "gtc_id":	"G56299XO",
    "iupac_condensed":	"Neu5Ac(a2-3)Gal(b1-3)GalNAc(?1-",
    "motif":	null,
    "subsumption":	"Linkage-defined saccharide",
    "mass":	674.24
  }
]