DGlcpNAc[6S]b1-3DGalp[6S]b1-4DGlcpNAc[6S]b1-3DGalp[6S]b1-4DGlcpNAc[6S]b1-3DGalp[6S]b1-4DGlcpNAc[6S]b1-3DGalpb1-OH