You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 5-[(1S,2R)-2-(4-methoxy-4-methylpiperidin-1-yl)cycloheptyl]oxy-2-(6-methylidene-2-oxopiperidin-3-yl)-3H-isoindol-1-one ?
user
C28H39N3O4
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