You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5Z)-3-(3,4-dimethylphenyl)-5-[[7-ethyl-1-(2-oxo-2-piperidin-1-ylethyl)indol-3-yl]methylidene]-1-methyl-2-sulfanylideneimidazolidin-4-one by IUPAC nomenclature, provide its molecular formula.
user
C30H34N4O2S
assistant