Showing structure for (1r,2z,4r,6s,9r,10r)-3-methyl-7,11-dimethylidene-12-oxo-13-oxatricyclo[8.3.0.0⁴,⁶]tridec-2-en-9-yl (2e)-4-hydroxy-2-(hydroxymethyl)but-2-enoate