You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[4-(2-carbamoylphenyl)phenyl]methyl]-N-[(3,4-dihydroxyphenyl)methyl]-2,3-dihydro-1,4-benzoxazine-7-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H27N3O5
assistant