You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3S,4S,5R,9R,10S,13R,14R,17R)-17-[(2R,5S)-5-ethyl-6-methylheptan-2-yl]-4,10,13-trimethyl-2,3,4,5,6,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol by IUPAC nomenclature, provide its molecular formula.
user
C30H52O
assistant