You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,3R,5S,7R,11R,14R,15S,16S,17S,18S,20Z,25S,28S,31R,33R)-5-[(2S)-2,3-bis[[tert-butyl(dimethyl)silyl]oxy]propyl]-16,17,19-tris[[tert-butyl(dimethyl)silyl]oxy]-22-hydroxy-6-methoxy-33-methyl-27,34-dimethylidene-4,35,36,37,38-pentaoxahexacyclo[29.3.1.111,15.114,18.125,28.03,7]octatriacont-20-en-9-one by IUPAC nomenclature, provide its molecular formula.
user
C70H132O13Si5
assistant