You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-[[[(3-ethoxyspiro[3.4]octan-1-yl)amino]-(2-methylsulfanylethylamino)methylidene]amino]-N,N-dimethylacetamide is given. What is its corresponding molecular formula?
user
C18H34N4O2S
assistant