Using COC(=O)c1ccc(COC(=O)N2CCC[C@@H]3[C@H]2CCN3c2ncnc3[nH]ccc23)cc1 to produce O=C(O)c1ccc(COC(=O)N2CCC[C@@H]3[C@H]2CCN3c2ncnc3[nH]ccc23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.