3-epi-25-Hydroxy Vitamin D3-d6

(εR,1R,3aS,4E,7aR)-Octahydro-4-[(2Z)-2-[(5R)-5-hydroxy-2-methylenecyclohexylidene]ethylidene]-α,α,ε,7a-tetramethyl-H-indene-1-pentanol-d6; (3α,5Z,7E)-9,10-Seco- cholesta-5,7,10(19)-triene-3,25-diol-d6; 3-epi-25-Hydroxyvitamin D3-d6;