You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2-morpholin-4-ylpyridin-4-yl)methyl]-3-(5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-2-ylmethyl)urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H26N6O2
assistant