Valganciclovir Dimer Stereoisomer A, B, C

(2S,2’S)-(((2,2′-(methylenebis(azanediyl))bis(6-oxo-1H-purine-9,2(6H)-diyl))bis(methylene))bis(oxy))bis(3-hydroxypropane-2,1-diyl) bis(2-amino-3-methylbutanoate)