You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[3-cyano-1-cyclobutyl-5-(1,3-dioxan-5-yloxy)indol-2-yl]phenyl]propane-1-sulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H29N3O5S
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