You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R)-N-cyclohexyl-6-(furan-2-yl)-3-methyl-1-oxo-2-(2-pyrrolidin-1-ylethyl)-4H-pyrrolo[1,2-a]pyrazine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H34N4O3
assistant