You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[5-[3-[butyl(6,7-dihydro-1,3-benzothiazol-2-yl)amino]propoxy]-1H-indol-3-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H29N3O3S
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