You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 1-[[17-[2-(2-chloro-6-fluorophenyl)acetyl]-5,13-dihydroxy-6,10-dimethyl-5-pentacyclo[13.2.2.01,9.02,6.010,15]nonadeca-16,18-dienyl]methyl]-1-(naphthalen-1-ylmethyl)-3-(1-phenylethyl)urea into molecular formula.
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C50H54ClFN2O4
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