You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(4-chlorophenyl)-1-(2,3-dihydro-1H-inden-1-yl)-2-methyl-5-pentylpyrrole-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H29ClN2O
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