Formic acid (3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-7,12-diformyloxy-17-((R)-4-imidazol-1-yl-1-methyl-4-oxo-butyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester
cholic acid triformate
3α,7α,12α-triformyloxy-5β-cholan-24-al
3α,7α,12α-trihydroxy-5β-cholan-24-al
(carbethoxyethylidene)triphenylphosphorane