You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[3-[(2-cyclopentyl-6,7-dimethyl-2,3-dihydro-1H-inden-5-yl)oxycarbonyl]phenyl]benzoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H30O4
assistant