You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3R,4R)-6,7-dimethoxy-2-methyl-1-oxo-3-thiophen-2-yl-N-(thiophen-2-ylmethyl)-3,4-dihydroisoquinoline-4-carboxamide .
user
C22H22N2O4S2
assistant