You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-ethyl-N-[2-(1H-indol-3-yl)-2-(4-methoxyphenyl)ethyl]-2,4-dioxo-1H-quinazoline-7-carboxamide .
user
C28H26N4O4
assistant