You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule propan-2-yl (3S)-3-[acetyl-[3-oxo-5-phenyl-2-propan-2-yl-1-(thiophene-2-carbonyl)-2H-pyrazin-4-yl]amino]-2-hydroxy-4-phenylbutanoate .
user
C33H37N3O6S
assistant