You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-[1-(hydroxymethyl)indol-3-yl]-4-(1-methyl-6-nitroindol-3-yl)pyrrole-2,5-dione;3-(1H-indol-3-yl)-4-(1-methyl-6-nitroindol-3-yl)pyrrole-2,5-dione into molecular formula.
user
C43H30N8O9
assistant