You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S,6S,9aR)-6-(4-aminobutyl)-3-benzyl-1-[[3,5-bis(trifluoromethyl)phenyl]methoxy-hydroxymethyl]-8-(oxolan-2-ylmethyl)-3,6,9,9a-tetrahydro-2H-pyrazino[1,2-a]pyrimidine-4,7-dione into its molecular formula.
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C33H40F6N4O5
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