Using NCCN1CCOCC1, Nc1nc(Nc2ccc(C(=O)O)cc2)nn1-c1ccccn1 to produce Nc1nc(Nc2ccc(C(=O)NCCN3CCOCC3)cc2)nn1-c1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.