You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S,4R)-N-(3-chloro-4-methoxyphenyl)-2-methyl-1-oxo-3-thiophen-2-yl-3,4-dihydroisoquinoline-4-carboxamide into its molecular formula.
user
C22H19ClN2O3S
assistant