Using Nc1c[nH]nc1-c1nc2cc(CN3CCOCC3)ccc2[nH]1, O=C(O)c1onc2ccccc12 to produce O=C(Nc1c[nH]nc1-c1nc2cc(CN3CCOCC3)ccc2[nH]1)c1onc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.