(4R)-4-((3R,5S,7R,8S,9S,10S,13R,14S,17R)-6-Ethyl-3,7-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl-2,2,4,4-d4)pentanoic Acid,(4R)-4-((3R,5S,7R,8S,9S,10S,13R,14S,17R)-6-Ethyl-3,7-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl-2,2,4,4-d4)pentanoic Acid;,Obeticholic Acid Stable Isotopes