Using BrCC1CO1, Cc1cccc(Nc2cc(Nc3cccc(O)c3)ncn2)c1 to produce Cc1cccc(Nc2cc(Nc3cccc(OCC4CO4)c3)ncn2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.