You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-(2,5-dimethyl-1-propan-2-ylpyrrole-3-carbonyl)-4-methoxypyrrolidin-2-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H26N2O4
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