You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5,11,17,23-tetratert-butyl-26-phenylmethoxy-28-propoxypentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9(27),10,12,15(26),16,18,21,23-dodecaene-25,27-diol into its molecular formula.
user
C54H68O4
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