You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-methylbutyl)-1-[2-oxo-2-[4-(phenoxymethyl)-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]ethyl]-3-propan-2-ylurea is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H35N3O3S
assistant