You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2,2,4,6,8-pentamethyl-4,6-bis[3-(oxiran-2-ylmethoxy)propyl]-8-propyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane;2,2,4,6,8-pentamethyl-4,6,8-tris[3-(oxiran-2-ylmethoxy)propyl]-1,3,5,7,2,4,6,8-tetraoxatetrasilocane;2,4,6,8-tetramethyl-2-[2-(oxiran-2-ylmethoxy)ethyl]-4,6,8-tris[3-(oxiran-2-ylmethoxy)propyl]-1,3,5,7,2,4,6,8-tetraoxatetrasilocane into molecular formula.
user
C70H146O30Si12
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