You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name [1-(2-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,11,13-hexaenyl)piperidin-3-yl]carbamic acid ?
user
C21H24N2O2
assistant