You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2,5-dichlorothiophen-3-yl)methyl]-4-(1,2-oxazol-3-yl)piperidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H15Cl2N3O2S
assistant