You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[2-[(2S,3R)-1-[(2-methylpropan-2-yl)oxycarbonyl]-3-phenylpyrrolidin-2-yl]-2-oxoethyl]-1H-indole-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H28N2O5
assistant