You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1S,2R,5R)-5-methyl-2-(2-naphthalen-2-ylpropan-2-yl)cyclohexyl]oxy-octylphosphinous acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H43O2P
assistant