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-(4-chloro-3-cyclobutylsulfonyl-2-hydroxyphenyl)-3-(4,5,6,7-tetrahydro-1-benzofuran-7-yl)urea .
user
C19H21ClN2O5S
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