You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopropyl-2-methoxy-5-[(2R)-2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)pyrrolidine-1-carbonyl]benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23N5O4S
assistant