You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-(1,3-benzothiazol-2-ylamino)-4-methyl-6,7-dihydro-5H-pyrido[2,3-c]pyridazin-8-yl]-5-[3-[2-fluoro-4-[3-[4-[4-[[(2S)-1-[(2S,4R)-4-hydroxy-2-[3-[[(1S)-1-[4-(4-methyl-1,3-thiazol-5-yl)phenyl]ethyl]amino]oxiran-2-yl]pyrrolidin-1-yl]-3,3-dimethyl-1-oxobutan-2-yl]carbamoyl]cyclohexanecarbonyl]piperazin-1-yl]prop-1-ynyl]phenoxy]propyl]-1,3-thiazole-4-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C67H77FN12O8S3
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