You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[ethylamino-[[2-(4-methoxyphenyl)-2-pyrrolidin-1-ylethyl]amino]methylidene]amino]-N-(3-ethynylphenyl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H33N5O2
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