NH处可以是甲基乙基 或者两个甲基 两个乙基都可以

2-(7-amino-6-chloro-2-oxo-2H-chromen-4-yl)-N-methylacetamide
Chemical Formula: C12H11ClN2O3
Exact Mass: 266.0458
Molecular Weight: 266.6810
Elemental Analysis: C, 54.05; H, 4.16; Cl, 13.29; N, 10.50; O, 18.00