You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(3S,5S,9R,10S,13R,15S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-3-trityloxy-2,3,4,5,6,7,9,11,12,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-15-yl] hexadecanoate by IUPAC nomenclature, provide its molecular formula.
user
C62H90O3
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