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 (1R,2S,3aR)-1-(thiophene-2-carbonyl)-2-(3,4,5-trimethoxyphenyl)spiro[2,3a-dihydro-1H-pyrrolo[1,2-a]quinoline-3,2'-indene]-1',3'-dione .
user
C34H27NO6S
assistant