You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[5-[[(4S)-2-amino-4-phenyl-4,5-dihydroimidazol-1-yl]sulfonyl]-2,3-dihydroindol-1-yl]-2-thiophen-2-ylethanone by IUPAC nomenclature, provide its molecular formula.
user
C23H22N4O3S2
assistant