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 5-methyl-3-[[5-(2-methylpropyl)-2-pyridin-2-yl-1,2,4-triazol-3-yl]methyl]-1,3-benzoxazol-2-one .
user
C20H21N5O2
assistant