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 N-ethyl-5-(3-methyl-7-propan-2-yl-5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-2-yl)-1,3-benzoxazol-2-amine .
user
C20H26N4O
assistant