You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R,5S)-1-methyl-4-[2-(2H-triazol-4-yl)ethylamino]-5-(1,3,5-trimethylpyrazol-4-yl)pyrrolidin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H23N7O
assistant