You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[17-(cyclohexanecarbonyl)-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-propan-2-ylurea is the IUPAC name of a molecule. Please give its molecular formula.
user
C44H58N2O4
assistant