(11-Oxo-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetic acid 55453-87-7 AIDS-128843 AIDS128843 Arelix HP 549 Isoxepac NSC300907 {6,11-Dihydro-11-oxodibenz[b,} e\]oxepin-2-acetic acid {Dibenz[b,e]oxepin-2-acetic} acid, 6,11-dihydro-11-oxo-