2,2-Dimethyl-1,3-dioxolan-4-ylmethyl 6,11-dihydro-11-oxodibenz(b,e)oxepin-3-acetate 63883-18-1 BRN 1330226 DIBENZ(b,e)OXEPIN-3-ACETIC ACID, 6,11-DIHYDRO-11-OXO-, (2,2-DIMETHYL-1,3-DIOXOLA Dibenz(b,e)oxepin-3-acetic acid, 6,11-dihydro-11-oxo-, (2,2-dimethyl-1,3-dioxolan-4-yl)methyl ester