(7,7'-Bi-4aH-xanthene)-4a,4'a-dicarboxylic acid, 2,2',3,3',4,4',9,9'-octahydro-1,1',8,8'-tetrahydroxy-3,3'-dimethyl-9,9'-dioxo-4,4'-bis((tetrahydro-2H-pyran-2-yl)oxy)-, dimethyl ester, (3S-(3alpha,4beta,4abeta,7(3'R*,4'S*,4'aR*)))- 5,5'-Bis(2'-tetrahydropyranosyl)secalonic acid D 5-Di-(2'-tetrahydropyranosyl)secalonic acid D 54959-69-2 Dthpsad