Using CCOC(=O)c1ccc(OCOC)c(-c2cccn2C(=O)OC(C)(C)C)c1 to produce CCOC(=O)c1ccc(OCOC)c(C2CCCN2C(=O)OC(C)(C)C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.