Using CN(C(=O)OC(C)(C)C)C1CCNC1, O=C(O)c1cc2ccccc2[nH]1 to produce CN(C(=O)OC(C)(C)C)C1CCN(C(=O)c2cc3ccccc3[nH]2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.