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Tetrafluorophthalic anhydride

Trans-5-(4-chlorophenyl)-4-methyl-2-thiazolidone

Trifluoroacetyltriphenylsilane 2,4,6-triisopropylbenzenesulfonylhydrazone

Sulfocostunolide a

Sulfocostunolide b

4-Epi-isoinuviscolide

3-Acetoxy-11-ursen-28,13-olide

3-Hydroxy-11-ursen-28,13-olide