You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (6,7-dimethoxy-2H-chromen-3-yl)-(5-methoxy-2,2-dimethyl-8-nitrochromen-6-yl)methanone;4-(3,4-dimethoxyphenoxy)-1-(5-methoxy-2,2-dimethyl-8-nitrochromen-6-yl)but-2-yn-1-one .
user
C48H46N2O16
assistant