2-[6-[6-[6-[6-[6-[6-[6-[6-[5-acetamido-6-[2-carboxy-4,5-dihydroxy-6-[6-hydroxy-5-(sulfoamino)-4-sulfooxy-2-(sulfooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4-hydroxy-2-(sulfooxymethyl)oxan-3-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-4-hydroxy-5-(sulfoamino)-2-(sulfooxymethyl)oxan-3-yl]oxy-2-carboxy-4-hydroxy-5-sulfooxyoxan-3-yl]oxy-4-hydroxy-5-(sulfoamino)-2-(sulfooxymethyl)oxan-3-yl]oxy-2-carboxy-4-hydroxy-5-sulfooxyoxan-3-yl]oxy-4-hydroxy-5-(sulfoamino)-2-(sulfooxymethyl)oxan-3-yl]oxy-2-carboxy-4-hydroxy-5-sulfooxyoxan-3-yl]oxy-4-hydroxy-5-(sulfoamino)-2-(sulfooxymethyl)oxan-3-yl]oxy-4-hydroxy-3-sulfooxy-3,4-dihydro-2H-pyran-6-carboxylic acid