You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,3R,6S,8R,11S,12S,14R,15S,16R)-15-[(1S)-1-(dimethylamino)ethyl]-12,16-dimethyl-6-(methylamino)-7-methylidenepentacyclo[9.7.0.01,3.03,8.012,16]octadecan-14-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H44N2O
assistant