You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name methyl 2-[(6E,7E)-6-(2-methoxy-2-oxoethylidene)-1-oxo-7-trimethylsilyl-3,4-dihydro-2H-2-benzazecin-5-ylidene]acetate into its molecular formula.
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C22H27NO5Si
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