You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[8-(3a,7a-dihydro-1,3-benzothiazol-4-ylmethyl)-2-benzyl-6-[(4-hydroxyphenyl)methyl]-4,7-dioxo-3,6,9,9a-tetrahydropyrazino[2,1-c][1,2,4]triazin-1-yl]butanamide by IUPAC nomenclature, provide its molecular formula.
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C32H36N6O4S
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