You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1-methylpyrrol-2-yl)-[8-(morpholin-4-ylmethyl)-5,5-dioxo-5lambda6-thia-2-azaspiro[3.4]octan-2-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H25N3O4S
assistant