CCOC(=O)NC(=O)c1cn(CC(=O)NCC(=O)NCC(=O)N2CCN(CCn3c(C)nc(C(N)=O)c3N)CC2)c(=O)[nH]c1=O
The donor in a hydrogen bond is usually a strongly electronegative atom such as N, O, or F that is covalently bonded to a hydrogen bond. How many hydrogen bond donors does the molecule have?