Using COCCBr, O=C(Nc1cccnc1)N1CC(Oc2ccc(-c3cccc(O)c3)cn2)C1 to produce COCCOc1cccc(-c2ccc(OC3CN(C(=O)Nc4cccnc4)C3)nc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.