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