You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[1-[[1-cyano-2-(2-oxopyrrolidin-3-yl)ethyl]amino]-1-oxopent-4-yn-2-yl]-4-methoxy-1H-indole-2-carboxamide into its molecular formula.
user
C22H23N5O4
assistant