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 methyl 4-methyl-2-oxo-6-thiophen-2-yl-3-(2-thiophen-2-ylethyl)-1,6-dihydropyrimidine-5-carboxylate .
user
C17H18N2O3S2
assistant