(4aR,5aS,6aR,8S,9R,10aS,11aR,13aS)-2,2,10a-Trimethyl-8-(2-triisopropylsilanyloxy-ethyl)-dodecahydro-1,3,5,7,11-pentaoxa-benzo[4,5]cyclohepta[1,2-b]naphthalen-9-ol

Triisopropyl-[2-((4aR,5aS,6aR,8S,10aS,11aR,13aS)-2,2,10a-trimethyl-9-methylene-dodecahydro-1,3,5,7,11-pentaoxa-benzo[4,5]cyclohepta[1,2-b]naphthalen-8-yl)-ethoxy]-silane