1H-Xanthene-2,7-dicarboxylic acid, 4,4A,9,9A-tetrahydro-4,4A-dihydroxy-6-methoxy-3,4,5,8,9A-pentamethyl-1-oxo-, 2-(4-((4-carboxy-3-methoxy-2,5,6-trimethylphenoxy)carbonyl)-3-methoxy-2,5,6-trimethylphenyl) 7-(4-carboxy-3-metoxy-2,5,6-trimethylphenyl) ester, (4alpha,4aalpha,9abeta)- |