You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R,3S,4S,5R,6R)-2-(1-ethynylcyclohexyl)oxy-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxane by IUPAC nomenclature, provide its molecular formula.
user
C42H46O6
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