You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-[methyl-[(2S)-2-(5-naphthalen-2-yl-1H-imidazol-2-yl)-2-(5-pyrrolidin-1-yltetrazol-2-yl)acetyl]amino]heptanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H35N9O2
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