You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 3-(2,6-dichlorophenyl)-7-[(9-methyl-1,2,3,4-tetrahydropyrido[3,4-b]indol-7-yl)amino]-2H-pyrimido[5,4-e][1,3]oxazin-4-one using the IUPAC nomenclature.
user
C24H20Cl2N6O2
assistant