You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[[3-(2-hydroxyethyl)oxolan-3-yl]methyl]-2-methyl-3-[[1-(2-methylpropyl)piperidin-3-yl]methyl]guanidine .
user
C19H38N4O2
assistant