You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2-ethylsulfanyl-1-hydroxycyclobutyl)methyl]-3,6,6-trimethyl-4-oxo-5,7-dihydro-1-benzofuran-2-carboxamide into its molecular formula.
user
C19H27NO4S
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