You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(6-methoxy-2,2-dimethyl-3,4-dihydrochromen-4-yl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-d][1,4]diazepine-2-carboxamide .
user
C20H26N4O3
assistant