You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[(4,5-dimethyl-1,3-oxazol-2-yl)methylamino]phenyl]-N-(1-hydroxybutan-2-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H25N3O3
assistant