You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(1,2,3,3a,4,5,6,7,8,8a-decahydrocyclohepta[c]pyrazol-3-ylmethyl)-N-methyl-3,4-dihydro-2H-chromene-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H29N3O2
assistant