You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-prop-2-enyl-4-[(E)-3-[(E)-3-(4-prop-2-enylpiperazin-1-yl)prop-2-enoxy]prop-1-enyl]piperazine into molecular formula.
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C20H34N4O
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