You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3aR,5S,7aR)-N-(furan-2-ylmethyl)-1-[(1-methylpyrazol-4-yl)methyl]-3,3a,5,6,7,7a-hexahydro-2H-pyrano[3,2-b]pyrrole-5-carboxamide;2,2,2-trifluoroacetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H25F3N4O5
assistant