You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(3-methyl-5-phenyl-2-piperazin-1-ylimidazol-4-yl)-N-[(1R)-1-phenylethyl]pyridin-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H30N6
assistant