| [2-[(2r,3s,4r,5r)-5-(4-amino-2-oxo-pyrimidin-1-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]ethoxy-hydroxy-phosphoryl][(2r,3s,4r,5r)-5-(4-amino-2-oxo-pyrimidin-1-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl[(2r,3s,4r,5r)-5-(6-aminopurin-9-yl)-3,4-dihydroxy-tet |
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