You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [3-[[(2S)-1-amino-3-methyl-1-oxobutan-2-yl]carbamoyl]pyridin-1-ium-1-yl]methyl N-[(2S)-1-phenylpropan-2-yl]carbamate .
user
C22H29N4O4+
assistant