You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (11R)-7-chloro-6-(2-fluoro-6-hydroxyphenyl)-4-[(3S)-3-methyl-6-oxo-1,3,4,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-2-yl]-13-prop-2-enoyl-9-oxa-1,5,13-triazatricyclo[9.4.0.03,8]pentadeca-3(8),4,6-trien-2-one by IUPAC nomenclature, provide its molecular formula.
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C28H29ClFN5O5
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