You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (8R,9S,13S,14S,16R,17R)-16-[(3,5-ditert-butyl-2-hydroxyphenyl)methylamino]-3-methoxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-ol by IUPAC nomenclature, provide its molecular formula.
user
C34H49NO3
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