"8-[4-(2-Butoxyethoxy)phenyl]-1,2,3,4-tetrahydro-1-(2-methylpropyl)-N-[4-[[(1-propyl-1H-imidazol-5-yl)methyl]sulfonyl]phenyl]-1-benzazocine-5-carboxamide-d9; 8-[4-(2-Butoxyethoxy)phenyl]-1-isobutyl-N-[4-[[(1-propyl-1H-imidazol-5-yl)methyl]sulfonyl]phenyl]-1,2,3,4-tetrahydro-1-benzazocine-5-carboxamide-d9",Cenicriviroc Stable Isotopes