You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[4-[[2-(furan-2-yl)-1,3-thiazol-4-yl]methyl]-1,4-diazepan-1-yl]sulfonyl]-3,5-dimethyl-1,2-oxazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H22N4O4S2
assistant