You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (3aS,4R,8aS)-2,2-dimethyl-4-(trityloxymethyl)-3a,4,6,8a-tetrahydro-[1,3]dioxolo[4,5-c]oxepine ?
user
C29H30O4
assistant