You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 3-amino-1-methyl-N-[1-[4-oxo-3-phenyl-5-(2-pyridin-3-ylethynyl)quinazolin-2-yl]ethyl]-5-(prop-2-enylamino)pyrazole-4-carboxamide ?
user
C31H28N8O2
assistant