Using COCCl, COC(=O)c1ccc(O)cc1OC1CCN(C(=O)OC(C)(C)C)CC1 to produce COCOc1ccc(C(=O)OC)c(OC2CCN(C(=O)OC(C)(C)C)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.