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 [(2S)-1-[[4,4-dimethyl-1-oxo-1-[[(2S)-1-oxo-3-[(3S)-2-oxopyrrolidin-3-yl]propan-2-yl]amino]pentan-2-ylidene]amino]-2,3-dimethyl-1-oxobutan-2-yl]-phenylmethoxycarbonyl-sulfanylideneazanium .
user
C28H39N4O6S+
assistant