You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E,4E)-5-[3,4-bis[[tert-butyl(dimethyl)silyl]oxy]phenyl]-2-cyano-N-[(3,4-dihydroxyphenyl)methyl]penta-2,4-dienamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H44N2O5Si2
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