You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,2S,5R,6R,7R,10R,12R,13R,16R)-6,13-bis(hydroxymethyl)-2,6-dimethyltetracyclo[10.3.1.01,10.02,7]hexadecane-5,13,16-triol by IUPAC nomenclature, provide its molecular formula.
user
C20H34O5
assistant