You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-amino-6-(2-ethylanilino)-1,3,5-triazin-2-yl]methyl (3S)-1-cyclopentyl-5-oxopyrrolidine-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H28N6O3
assistant