You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2R,3R,4aR,8R,8aS)-8-[(4-methoxyphenyl)methoxy]-3-phenylmethoxy-2-(phenylmethoxymethyl)-3,4,4a,7,8,8a-hexahydro-2H-pyrano[3,2-b]pyran-6-one into molecular formula.
user
C31H34O7
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