You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethane;N-[2-[1-(5-ethylpyrimidin-2-yl)piperidin-3-yl]ethyl]-N-(2-methylpent-4-en-2-yl)formamide;methanol is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H48N4O2
assistant