4b,9b-Dihydro-4b,9b-diphenylbenzofuro(3,2-b)benzofuran-2,7-diol dipropionate Benzofuro(3,2-b)benzofuran-2,7-diol, 4b,9b-dihydro-4b,9b-diphenyl-, dipropionate DF8075700 Propionic acid, diester with 4b,9b-dihydro-4b,9b-diphenylbenzofuran(3,2)benzofuran-2,7-diol