英文别名4,7-Diazaspiro[2.5]octane-4-carboxylic acid, 7-(2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidin-7-yl)-, 1,1-dimethylethyl ester; tert-butyl 7-(2-hydroxy-4-oxo-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate; Risdiplam Impurity 10; 7-(2-Hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylic acid tert-butyl ester 
