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 1-methyl-4-(6-oxo-1H-pyrazine-3-carbonyl)-10-prop-2-enyl-1,4,10-triazaspiro[5.6]dodecan-9-one .
user
C18H25N5O3
assistant