Using COC(=O)c1ccn(-c2ccc(OC3CCN(C4CCC4)CC3)cc2)c1 to produce O=C(O)c1ccn(-c2ccc(OC3CCN(C4CCC4)CC3)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.