You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3E,6E,10E,12R,14E)-2,12,16-trihydroxy-2,6,10,14-tetramethylhexadeca-3,6,10,14-tetraen-5-one .
user
C20H32O4
assistant