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 butyl 2-[[[(3S)-5-azido-3-[[(2S)-2,6-bis[(2-methylpropan-2-yl)oxycarbonylamino]hexanoyl]amino]pentanoyl]amino]-methylamino]acetate .
user
C28H52N8O8
assistant