14-Hydroxy-3-isopropyl-6,14-dimethyl-15-oxa-bicyclo[8.4.2]hexadeca-2,6,10-trien-16-one 15-oxabicyclo[8.4.2]hexadeca-2,6,10-trien-16-one, 14-hydroxy-6,14-dimethyl-3-(1-methylethyl)-, (1S,2E,6E,14R)- Echinodolide A InChI=1/C20H30O3/c1-14(2)17-11-10-15(3)7-5-8-16-9-6-12-20(4,22)18(13-17)23-19(16)21/h7,9,13-14,18,22H,5-6,8,10-12H2,1-4H3/b15-7+,16-9-,17-13+/t18-,20+/m0/s rel-(1R,2E,6E,14S)-14-hydroxy-3-isopropyl-6,14-dimethyl-15-oxabicyclo[8.4.2]hexadeca-2,6,10-trien-16-one