You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named methane;2,4,6,8-tetramethyl-2-(naphthalen-2-yloxymethyl)-1,3,5,7,2,4,6,8-tetraoxatetrasilocane by IUPAC nomenclature, provide its molecular formula.
user
C18H36O5Si4
assistant