You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-methyl-1-[(3-propan-2-yl-1,2-oxazol-5-yl)methyl]-3-[4-(pyridin-2-ylamino)butyl]guanidine ?
user
C18H28N6O
assistant