label: N-acetylgalactosaminyl-1-4-glucuronoyl-1-3-galactopyranosyl-1-3-galactopyranosyl-1-4-xylopyranosyl-1-3-serine
label_lc: n-acetylgalactosaminyl-1-4-glucuronoyl-1-3-galactopyranosyl-1-3-galactopyranosyl-1-4-xylopyranosyl-1-3-serine