You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(1R,3aS,5aR,5bR,7aS,9S,11R,11aR,11bS,13aR,13bR)-11-hydroxy-3a-(hydroxymethyl)-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysen-9-yl] (E)-3-(4-hydroxyphenyl)prop-2-enoate by IUPAC nomenclature, provide its molecular formula.
user
C39H56O5
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