Using COCCBr, CC(C)(C)c1cc(NC(=O)Nc2cccc(Oc3ncnc4cc(O)ccc34)c2)no1 to produce COCCOc1ccc2c(Oc3cccc(NC(=O)Nc4cc(C(C)(C)C)on4)c3)ncnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.