(ETHOXYCARBONYL)PHOSPHONIC ACID 1-(5-(2-CHLOROETHYL)-2,4-DIOXO-1,2,3,4-TETRAHYDROPYRIMIDIN-5-YL)-2-DEOXY-.BETA.-D-ERYTHRO-PENTOFURANOS-3-YL ESTER
(ethoxycarbonyl)phosphonic acid 1-(5-(2-chloroethyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-2-deoxy-.beta.-d-erythro-pentofuranos-3-yl ester