You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (4E)-4-[[4-[(2S)-butan-2-yl]oxy-3-chloro-5-methoxyphenyl]methylidene]-5-methyl-2-phenylpyrazol-3-one ?
user
C22H23ClN2O3
assistant