You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-1-[(2R)-2-(benzylsulfonylamino)-3-phenylpropanoyl]-N-(2,4-diaminoquinazolin-6-yl)pyrrolidine-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H31N7O4S
assistant