You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (1R,2S,5R,6R,7R,11R,12S,13R)-6,13-bis(hydroxymethyl)-2,6-dimethyltetracyclo[10.3.1.01,10.02,7]hexadec-9-ene-5,11,13-triol into molecular formula.
user
C20H32O5
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