5,15-Dioxatricyclo(12.3.1.0(4,6))octadec-9-en-16-one, 13-hydroxy-4,9,13-trimethyl-17-methylene-, (1R-(1R*,4S*,6S*,9E,13S*,14R*))- 5,15-Dioxatricyclo(12.3.1.0(sup 4,6))octadec-9-en-16-one, 13-hydroxy-4,9,13-trimethyl-17-methylene-, (1R-(1R*,4S*,6S*,9E,13S*,14R*))- 65669-72-9 Flexibilide NSC 285706 Sinularin