label: 1alpha,2beta,25-trihydroxycholecalciferol + 3-hydroxypropanal => 1alpha,25-dihydroxy-2beta-(1,3-dihydroxypropoxy)-cholecalciferol
label_lc: 1alpha,2beta,25-trihydroxycholecalciferol + 3-hydroxypropanal => 1alpha,25-dihydroxy-2beta-(1,3-dihydroxypropoxy)-cholecalciferol