sinulariolide

11-Epi-sinulariolide

4,14-Dioxatricyclo(11.3.2.o(3.5))octadec-8-en-15-one, 12-hydroxy-5,9,13-trimethyl-16-methylene-, (1R-(1R*,3S*,5S*,8E,12R*,13R*))-