You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(6S,7R)-6-ethynyl-10-oxo-7-propan-2-yldodeca-1,11-dien-4-yl] 2,2-dimethylpropanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H34O3
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