2H-Pyran-2-acetic acid, tetrahydro-alpha,5-dimethyl-6-(2,4,6,12-tetrahydroxy-1,3,5,11,13,15-hexamethyl-9,13-octadecadienyl)-, (2S-(2alpha(R*),5alpha,6beta(1R*,2R*,3R*,4R*,5R*,6S*,9E,11S*,12S*,13E,15S*)))-