Using CCN=C=NCCCN(C)C, O=C(O)C1CCN(c2ccc3ccccc3n2)CC1 to produce CCOC(=O)C1CCN(c2ccc3ccccc3n2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.