You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3R,4R)-3-(2,4-dichlorophenyl)-2-[(1S,2S)-2-(methanesulfonamido)cyclohexyl]-1-oxo-N-(1,3-thiazol-2-ylmethyl)-3,4-dihydroisoquinoline-4-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C27H28Cl2N4O4S2
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