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 N-[[(2R)-oxolan-2-yl]methyl]-2-(thiophene-2-carbonylamino)-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxamide .
user
C18H20N2O3S2
assistant