You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (7aS)-2-[(2-benzyl-1,3-thiazol-4-yl)methyl]-5,6,7,7a-tetrahydropyrrolo[1,2-c]imidazole-1,3-dione .
user
C17H17N3O2S
assistant