You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,6R,9S,10R,12R,16S)-9,10-dihydroxy-4,4,12,16-tetramethyl-3,5-dioxapentacyclo[11.7.0.02,6.07,12.016,20]icosan-17-one;(2R,6R,9S,12R,16S)-9-hydroxy-4,4,12,16-tetramethyl-3,5-dioxapentacyclo[11.7.0.02,6.07,12.016,20]icosan-17-one;(2R,6R,9S,12R,16S)-4,4,9,12,16-pentamethyl-3,5-dioxapentacyclo[11.7.0.02,6.07,12.016,20]icosan-17-one;(2R,6R,12R,16S)-4,4,12,16-tetramethyl-3,5-dioxapentacyclo[11.7.0.02,6.07,12.016,20]icos-9-en-17-one;(2R,6R,9S,10R,12R,16S)-4,4,12,16-tetramethyl-17-methylidene-3,5-dioxapentacyclo[11.7.0.02,6.07,12.016,20]icosane-9,10-diol is the IUPAC name of a molecule. Please give its molecular formula.
user
C112H172O19
assistant