You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[2-(diethylamino)ethyl]-4-[hydroxy-(5-methyl-1-phenylpyrazol-4-yl)methylidene]-5-phenylpyrrolidine-2,3-dione .
user
C27H30N4O3
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