nudaphantin

(-)-2-Methylpropenoic acid 5-ethoxy-1a,2,3,7,8,8a,9,10,11a,11b-decahydro-1a-methyl-9-methylene-10-oxo-5H-3,6-methenofuro[2,3-f]oxireno[d]oxacycloundecin-8-yl ester