You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-(3,5-dimethylpyrazol-1-yl)-N-[1-(4-methyl-1,3-thiazol-2-yl)-2-thiophen-3-ylethyl]propanamide .
user
C18H22N4OS2
assistant