9,10-二氟-2,3-二氢-3-甲基-7-氧-7H-吡啶并[1,2,3-de]-1,4-苯并恶嗪-6-甲酸,

9,10-二氟-2,3-二氢-3-甲基-7-氧-7H-吡啶并[1,2,3-de]-1,4-苯并恶嗪-6-甲酸,

9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid