Using NC1CC1, O=c1[nH]c2c[nH]nc2c2nc3ccc(CN4CCOCC4)cc3n12 to produce O=C(Nc1c[nH]nc1-c1nc2cc(CN3CCOCC3)ccc2[nH]1)NC1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.