You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3R)-1-[3-(2-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,11,13-hexaenylidene)propyl]piperidin-3-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H30N2O
assistant