You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 5-(5-methylthiophen-2-yl)-N-[(3-pyridin-2-yl-1,2-oxazol-5-yl)methyl]pyrazolidine-3-carboxamide ?
user
C18H19N5O2S
assistant