(7R)-7-tert-butyl-2-methoxy-3-(3-methoxypropoxy)-11-oxo-6,7-dihydropyrido(1,2-d)(1,4)benzoxazepine-10-carboxylic acid
(7r)-7-tert-butyl-2-methoxy-3-(3-methoxypropoxy)-11-oxo-6,7-dihydropyrido(1,2-d)(1,4)benzoxazepine-10-carboxylic acid