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 3-(2,2-dimethylpropanoyl)-4-hydroxy-1-(pyridin-3-ylmethyl)-2-thiophen-2-yl-2H-pyrrol-5-one ?
user
C19H20N2O3S
assistant