You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-[[5,7-difluoro-2-hydroxy-1-(thietan-3-yl)indol-3-yl]diazenyl]benzoic acid using the IUPAC nomenclature.
user
C18H13F2N3O3S
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