You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-ethyl-2-[[2-(4-methylphenyl)oxan-3-yl]methyl]-3-(1-pyridin-2-ylpiperidin-4-yl)guanidine into its molecular formula.
user
C26H37N5O
assistant