You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3S)-N-benzyl-2-[2-[2-(1H-imidazol-5-yl)ethylamino]-3-methylbutanoyl]-3,4-dihydro-1H-isoquinoline-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C27H33N5O2
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