[
  {
    "gtc_id":	"G57321FI",
    "iupac_condensed":	"GalNAc(a1-",
    "motif":	"[{\"label\":\"Tn antigen\",\"id\":\"G57321FI\"}]",
    "subsumption":	null,
    "mass":	null
  },
  {
    "gtc_id":	"G53795EM",
    "iupac_condensed":	"Gal(a1-4)Gal(b1-6)Gal(b1-6)Gal(b1-",
    "motif":	"[{\"label\":\"Galactosylceramide\",\"id\":\"G65889KE\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	666.22
  },
  {
    "gtc_id":	"G08539FO",
    "iupac_condensed":	"Gal(b1-6)Gal(b1-",
    "motif":	"[{\"label\":\"Galactosylceramide\",\"id\":\"G65889KE\"}]",
    "subsumption":	"Fully-defined saccharide",
    "mass":	342.12
  }
]