You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[[4-[3-(dimethylamino)propoxy]phenyl]methyl]-3-[[3-(2-hydroxyethyl)oxolan-3-yl]methyl]-2-methylguanidine into its molecular formula.
user
C21H36N4O3
assistant