You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (3R)-2-[2-(diethylamino)ethyl]-6-(furan-2-yl)-3-methyl-N-(4-methylcyclohexyl)-1-oxo-4H-pyrrolo[1,2-a]pyrazine-3-carboxamide ?
user
C26H38N4O3
assistant