You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1S,2R)-2-[[7-[(3-cyano-1-methylpyrazol-4-yl)carbamoyl]pyrrolo[2,1-f][1,2,4]triazin-2-yl]amino]cyclohexyl] 2,2,2-trifluoroacetate into molecular formula.
user
C20H19F3N8O3
assistant