Propanedioic acid, mono(17-(9-((bis(methylamino)methylene)amino)-1,3-dimethyl-3-nonenyl)-5,7,9,11,21,25,27,29,31,35,37,38,39-tridecahydroxy-10,16,20,22,26,30,34-heptamethyl-19-oxo-18,41-dioxabicyclo(35.3.1)hentetraconta-12,14,22-trien-3-yl) ester