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 3-(3,4,6,7,8,8a-hexahydro-1H-pyrrolo[2,1-c][1,4]oxazin-3-ylmethylamino)pyrazine-2-carbonitrile .
user
C13H17N5O
assistant