You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-[(8S,9S,10R,13S,14S,17R)-11-hydroxy-10,13-dimethyl-17-(2-methylpentoxycarbonyloxy)-3-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-yl]-2-oxoethyl] 2-methylpropyl carbonate by IUPAC nomenclature, provide its molecular formula.
user
C33H48O9
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