For the molecule named 2-[[5-[(3E,5E)-5-fluorohepta-1,3,5-trien-3-yl]-8-methyl-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-3-yl]methylamino]-N-[(1E)-1-(3-hydroxy-6-methylidenecyclohexa-2,4-dien-1-ylidene)but-2-enyl]acetamide by IUPAC nomenclature, provide its molecular formula.