You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2,3-bis(2-bicyclo[2.2.1]heptanyl)-1-(1,2-dihydroacenaphthylen-5-yl)-1-[[N'-(1,2-dihydroacenaphthylen-5-yl)carbamimidoyl]amino]guanidine by IUPAC nomenclature, provide its molecular formula.
user
C40H44N6
assistant