You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(5S)-7,7-dimethyl-5-[(1-methylpyrazol-4-yl)methylamino]-6,8-dihydro-5H-quinazolin-2-yl]piperidin-4-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H30N6O
assistant