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 4-hydroxy-5-[[4-[(5-methoxy-1-methylbenzimidazol-2-yl)methoxy]phenyl]methyl]-3H-1,3-thiazol-2-one ?
user
C20H19N3O4S
assistant