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 6-bromo-5-methoxy-3,4-dimethyl-7-(5-methyl-1,3,4-thiadiazol-2-yl)chromen-2-one .
user
C15H13BrN2O3S
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