1,1'-(3,7,9-trihydroxy-8,9b-dimethyl-1-oxo-1,4,4a,9b-tetrahydrodibenzo[b,d]furan-2,6-diyl)bis(ethan-1-one)

tellurane-3,5-dione

盐酸

3-methanesulfonyl-pentane-2,4-dione

3-iodo-2,4-pentanedione