Using COC(=O)C1CN(C(=O)OC(C)(C)C)CCN1Cc1cc(OC)c(OC)c(OC)c1 to produce COC(=O)C1CNCCN1Cc1cc(OC)c(OC)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.