You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[benzyl-[(3-methylthiophen-2-yl)methyl]amino]-2-oxoethyl]-3-methyl-N-(oxolan-2-ylmethyl)butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H34N2O3S
assistant