You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
disodium;2-bromo-1,1-diethoxyethane;2,2-diethoxy-N,N-diethylethanamine;2-diethoxyphosphoryl-N-[4-(3-ethynylanilino)-7-[(3S)-oxolan-3-yl]oxyquinazolin-6-yl]acetamide;(E)-4-(diethylamino)-N-[4-(3-ethynylanilino)-7-[(3S)-oxolan-3-yl]oxyquinazolin-6-yl]but-2-enamide;2-(diethylamino)-1-hydroxyethanesulfonate;hydride;pentane;sulfur trioxide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C81H123BrN11Na2O20PS2
assistant