You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(dimethylamino)-11-methyl-12-quinazolin-7-yl-19-oxatetracyclo[14.2.1.01,6.011,15]nonadec-12-ene-4,5,8-triol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H39N3O4
assistant