You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[6-[4-(3-aminopentan-3-yl)phenyl]-3-(methoxymethyl)-2-oxo-7-phenylpyrido[2,3-b][1,4]oxazin-1-yl]acetonitrile by IUPAC nomenclature, provide its molecular formula.
user
C28H30N4O3
assistant