2h-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylic acid, 3,4,6,8,12,12a-hexahydro-4-methyl-6,8-dioxo-7-(phenylmethoxy)-ethylester,(4r,12as)-
CAS No. 1357289-04-3