You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule [(1S)-2-[(1S,2S,5S)-6,6-dimethyl-2-bicyclo[3.1.1]heptanyl]-1-phenylethyl] (2S)-2-acetyloxy-2-phenylacetate ?
user
C27H32O4
assistant