3-(tert-butyl-dimethyl-silanyloxy)-11-[10-(tert-butyl-diphenyl-silanyloxy)-2-hydroxy-8-methoxy-1,3,7,9-tetramethyl-6-oxo-decyl]-13,15,17-trimethoxy-6,12,16-trimethyl-10,23-dioxa-bicyclo[17.3.1]tricosa-5,7,21-trien-9-one

3-(tert-butyl-dimethyl-silanyloxy)-11-[5-(2-hydroxy-4-methoxy-3,5-dimethyl-tetrahydro-pyran-2-yl)-1,3-dimethyl-2-triethylsilanyloxy-pentyl]-13,15,17-trimethoxy-6,12,16-trimethyl-10,23-dioxa-bicyclo[17.3.1]tricosa-5,7,21-trien-9-one