You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (1S,2R,3S)-2-(4-chlorophenyl)sulfonyl-3-(4-ethylphenyl)-1-(hydroxymethyl)cyclopropane-1-carboxylic acid into molecular formula.
user
C19H19ClO5S
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