You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(1S,3'S,5'R)-6-cyano-4'-methoxy-3',5'-dimethylspiro[1,3-dihydroindene-2,1'-cyclohexane]-1-yl]imino-4,4,4-trifluorobutanimidamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H27F3N4O
assistant