CC(C)(C)OC[C@H](NC(=O)C1CCN(C(=O)OC(C)(C)C)CC1)c1nnc([C@H](CCCCNC(=O)OC(C)(C)C)NC(=O)OC(C)(C)C)o1
Drug-like molecules usually have no more than 5 Hydrogen bond donor. How many hydrogen bond donor does the molecule have?