You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-(3-chloro-3,4-dihydropyridin-6-yl)-3-[4-(2-piperidin-3-ylethyl)cyclohexa-1,5-dien-1-yl]urea .
user
C19H27ClN4O
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