You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3R,4S)-N-(5-chloro-2-methoxyphenyl)-2-cyclopentyl-1-oxo-3-thiophen-2-yl-3,4-dihydroisoquinoline-4-carboxamide into its molecular formula.
user
C26H25ClN2O3S
assistant