You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[[(5R,7S)-3-[(5-ethoxypyrazin-2-yl)methyl]-7-methyl-2-oxo-1-oxa-3-azaspiro[4.5]decan-7-yl]methyl]benzimidazole-5-carbonitrile .
user
C25H28N6O3
assistant