4-(Carboxymethyl)-6-chloro-2H-1,4-benzoxazin-3(4H)-one(6-Chloro-3-oxo-2,3-dihydro-benzo[1,4]oxazin-4-yl)-acetic acid2-(6-chloro-3-oxo-2H-benzo[b][1,4]oxazin-4(3H)-yl)acetic acid(6-Chloro-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)acetic acid6-氯-2,3-二氢-1,4-苯并噁嗪-3-酮-4-乙酸6-Chloro-3-oxo-2,3-dihydro-4H-1,4-benzoxazine-4-acetic acid2-(6-chloro-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-4-yl)acetic acid