You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S)-2-[4-[3-chloro-4-(pyridin-2-ylmethoxy)anilino]quinazolin-5-yl]oxypropyl]-N-methyl-2-(methylamino)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H29ClN6O3
assistant