O1c2c(C)ccc(C(=O)NC(C(C)OC(=O)C)C(=O)NC(C(C)C)C(=O)OC)c2N=C3C1=C(C)C(=O)C(N)=C3C(=O)NC(C(C)OC(=O)C)C(=O)NC(C(C)C)C(=O)OC