You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S)-3-(3-formylindol-1-yl)-2-hydroxypropyl]-N-(2-methoxyethyl)-4-methylbenzenesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H26N2O5S
assistant