1,3-Diazatricyclo(3.3.1.1(sup 3,7))decane-5,7-diacetic acid, 6-oxo-, diethyl ester 172984-91-7 5,7-Di(ethoxycarbonylmethyl)-6-oxo-1,3-diazaadamantane Diethyl 6-oxo-1,3-diazatricyclo(3.3.1.1(sup 3,7))decane-5,7-diacetate