You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [1-[2-acetyl-4-(butanoylamino)phenoxy]-3-[4-nitrooxybutanoyl(propan-2-yl)amino]propan-2-yl] formate;butyl nitrate ?
user
C27H42N4O12
assistant