1,3-Diazaspiro(4.5)decane-6-carboxylic acid, 2,4-dioxo-3-(2-hydroxyethyl)-, ethyl ester 2,4-Dioxo-3-(2-hydroxyethyl)-1,3-diazaspiro(4.5)decane-6-carboxylic acid ethyl ester HM2478500