You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R,2S,5R)-5-hydroxy-2,5,7-trimethyl-2-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]-4-oxospiro[1H-indene-6,1'-cyclopropane]-1-yl] acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H31NO6
assistant