You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[bis[2-[(4-nitrophenyl)carbamothioylamino]ethyl]amino]ethyl]-3-(4-nitrophenyl)thiourea;N,N-dimethylformamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H37N11O7S3
assistant