You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E,11Z,13R)-10-hydroxy-18-(methoxymethoxy)-20-[(4-methoxyphenyl)methoxy]-7,7,13,14-tetramethyl-6,8,15-trioxatricyclo[15.4.0.05,9]henicosa-1(17),2,11,18,20-pentaen-16-one;methane;(2E,11Z,13R)-18-(methoxymethoxy)-20-[(4-methoxyphenyl)methoxy]-7,7,13,14-tetramethyl-6,8,15-trioxatricyclo[15.4.0.05,9]henicosa-1(17),2,11,18,20-pentaene-10,16-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C65H82O18
assistant