You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-[(3-hydroxy-4-methoxyphenyl)methyl]-2,3-dihydroindol-5-yl]-(4-propan-2-ylphenyl)carbamic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H28N2O4
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