You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-amino-5-[[4-[2-hydroxy-2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]methyl]-1,3-thiazol-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H21N3O4S
assistant