You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 6-chloro-3-[1-[(4-chlorophenyl)methyl]-3,18-dioxo-1,4-diazacyclooctadec-2-yl]-1H-indole-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C32H39Cl2N3O4
assistant