113296-20-1

Benzenepentanoicacid, b,3,4-trihydroxy-,2,10-bis(3,4-dihydroxyphenyl)-3,4,9,10-tetrahydro-5-hydroxy-8-oxo-2H,8H-benzo[1,2-b:3,4-b']dipyran-3-ylester, [2R-[2a,3b(S*),10a]]-