Methyl O-2-deoxy-6-O-sulfo-2-(sulfoamino)-a-D-glucopyranosyl-(14)-O-b-D-glucopyranuronosyl-(14)-O-2-deoxy-3,6-di-O-sulfo-2-(sulfoami no)-a-D-glucopyranosyl-(14)-O-2-O-sulfo-a-L-idopyranuronosyl-(14)-2-deoxy-2-(sulfoamino)-a-D-glucopyranoside 6-(hydrogen s