Octyl 2,3,4,6-Tetra-O-sulfo-alpha-D-mannopyranosyl-(1->3)-2,4,6-tri-O-sulfo-alpha-D-mannopyranosyl-(1->3)-2,4,6-tri-O-sulfo-alpha-D-mannopyranosyl-(1->2)-3,4,6-tri-O-sulfo-alpha-D-mannopyranoside, Tridecasodium salt bioactivity Vascular endothelial growth factor A, long form (Knowledge Graph Assertion)