alpha-L-Fuc-(1->2)-beta-D-Gal-(1->3)-beta-D-GalNAc-(1->4)-[alpha-Neu5Ac-(2->8)-alpha-Neu5Ac-(2->3)]-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1')-ceramide(2-)
alpha-l-fuc-(1->2)-beta-d-gal-(1->3)-beta-d-galnac-(1->4)-[alpha-neu5ac-(2->8)-alpha-neu5ac-(2->3)]-beta-d-gal-(1->4)-beta-d-glc-(1<->1')-ceramide(2-)
An anionic ganglioside obtained by deprotonation of the neuraminosyl carboxy groups of fucosyl GD1b; major species at pH 7.3.