You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named acetic acid;(1R)-9-(cyclobutylamino)-1-methyl-8-[(2S)-1,1,1-trifluoropropan-2-yl]-3,5-dihydro-1H-[1,2,4]triazino[3,4-c][1,4]benzoxazin-2-one is given. What is its corresponding molecular formula?
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C20H25F3N4O4
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