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 (1R,5S,8S,9R,12R,13R,16R)-8-[(E,2R,5R)-5,6-dimethylhept-3-en-2-yl]-9,13-dimethyl-17,19-dioxapentacyclo[14.3.1.01,13.04,12.05,9]icos-3-en-18-one .
user
C29H44O3
assistant