You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-(2-hydroxy-3-methoxyphenyl)-3-(1H-indol-3-ylmethyl)-5-(3-nitrophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C29H24N4O8
assistant