You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[(2R)-2-[ethyl-[(4-methylphenyl)carbamoyl]amino]-2,3-dihydro-1H-inden-5-yl]sulfanyl]-2-methylpropanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H28N2O3S
assistant