You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (8S,9S,10R,13S,14S,17S)-17-[(2S)-2-hydroxy-6-methylheptan-2-yl]-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol by IUPAC nomenclature, provide its molecular formula.
user
C27H46O2
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