You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[3-(cyclobutylmethoxy)phenyl]-6-[3-(3,4-dihydro-1H-isoquinolin-2-yl)-3-oxopropyl]-4H-1,2,4-triazin-5-one by IUPAC nomenclature, provide its molecular formula.
user
C26H28N4O3
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