(2R,5S,13aR)-2,3,4,5,7,9,13,13a-八氢-8-甲氧基-7,9-二氧代-2,5-甲桥吡啶并[1',2':4,5]吡嗪并[2,1-b][1,3]氧氮杂卓-10-羧酸

(2R,5S,13aR)-2,3,4,5,7,9,13,13a-Octahydro-8-methoxy-7,9-dioxo-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxylic acid