You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3-(4-ethylphenyl)-5-(5-methyl-1,3-oxazol-2-yl)piperidin-1-yl]-morpholin-4-ylmethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H29N3O3
assistant