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system
Name the molecular formula for the molecule established as (10aS)-10a-[2-(3-methoxy-4-prop-2-enoxyphenyl)ethenyl]-8,10,10-trimethyl-3,4-dihydro-1H-pyrimido[1,2-a]indol-2-one using the IUPAC nomenclature.
user
C26H30N2O3
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