(3alpha,5beta,7alpha,12alpha)-3,7,12-Trihydroxycholestan-26-oic acid 26-THCA 3,7,12-trihydroxycholestan-26-oic acid 3alpha,7alpha,12alpha-Trihydroxy-5-beta-cholestan-26-oic acid 547-98-8 Trihydroxycholestanoic acid