1alpha,25-dihydroxy-2beta-(3-hydroxypropoxy)-19-norvitamin D3 / 1alpha,25-dihydroxy-2beta-(3-hydroxypropoxy)-19-norcholecalciferol
1alpha,25-dihydroxy-2beta-(3-hydroxypropoxy)-19-norvitamin d3 / 1alpha,25-dihydroxy-2beta-(3-hydroxypropoxy)-19-norcholecalciferol