You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-hydroxy-2-[[2-(2-methylsulfanylethyl)-5-propylimidazo[1,2-a]pyridin-3-yl]amino]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H22N4O2S
assistant