You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named benzyl 2-[[(2R,3R,4R,5S,6S)-3-benzoyloxy-4-[(4-methoxyphenyl)methoxy]-6-methyl-5-phenylmethoxyoxan-2-yl]oxymethyl]benzoate by IUPAC nomenclature, provide its molecular formula.
user
C43H42O9
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