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system
[3-methyl-5-(trifluoromethyl)phenyl]methyl (3S,6S,9aS)-6-(aminomethyl)-8-benzyl-3-[(4-methoxyphenyl)methyl]-4,7-dioxo-3,6,9,9a-tetrahydro-2H-pyrazino[1,2-a]pyrimidine-1-carboxylate;[3-methyl-5-(trifluoromethyl)phenyl]methyl (3S,6S,9aS)-6-(aminomethyl)-8-benzyl-3-[(4-methylphenyl)methyl]-4,7-dioxo-3,6,9,9a-tetrahydro-2H-pyrazino[1,2-a]pyrimidine-1-carboxylate;[3-methyl-5-(trifluoromethyl)phenyl]methyl (3R,6S,9aS)-6-(aminomethyl)-8-benzyl-3-[(4-methylphenyl)methyl]-4,7-dioxo-3,6,9,9a-tetrahydro-2H-pyrazino[1,2-a]pyrimidine-1-carboxylate;[3-methyl-5-(trifluoromethyl)phenyl]methyl (3R,6S,9aS)-8-benzyl-6-(1H-imidazol-5-ylmethyl)-4,7-dioxo-3-propyl-3,6,9,9a-tetrahydro-2H-pyrazino[1,2-a]pyrimidine-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
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