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 N-butyl-N-[(3S,4R)-6,8-dichloro-3-hydroxy-2,2-dimethyl-3,4-dihydrochromen-4-yl]ethanesulfonamide .
user
C17H25Cl2NO4S
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