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 (5Z)-1-[(2-chlorophenyl)methyl]-5-(2,3-dihydroindol-1-ylmethylidene)-1,3-diazinane-2,4,6-trione .
user
C20H16ClN3O3
assistant