label: N(2),6-disulfo-D-glucosamine + D-glucuronate => 3-D-glucuronosyl-N(2),6-disulfo-beta-D-glucosamine + H2O
label_lc: n(2),6-disulfo-d-glucosamine + d-glucuronate => 3-d-glucuronosyl-n(2),6-disulfo-beta-d-glucosamine + h2o