S1CC(OC1COC(=O)CCCCN2CCCN(CCN(CCCN(CC2)C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)N3C=CC(NC(=O)CCCCN4CCCN(CCN(CCCN(CC4)C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)=NC3=O