You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[4-[(R)-[(2S,5R)-4-[(3-fluorophenyl)methyl]-2,5-dimethylpiperazin-1-yl]-(3-hydroxyphenyl)methyl]phenyl]ethanone into molecular formula.
user
C28H31FN2O2
assistant