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 identified by (4aR,4bS,8aS,10aR)-6,9,10a-trimethyl-4a,4b,8,8a-tetrahydro-1H-phenanthrene-4,5-dione;(4aR,4bR,8aS,10aR)-3,4b,10-trimethyl-4a,8,8a,10a-tetrahydro-1H-phenanthrene-4,5-dione ?
user
C34H40O4
assistant