Using CCOC(=O)CCI, CC(=O)OCC(=O)CC(=O)OC(C)(C)C to produce CCOC(=O)CCC(C(=O)COC(C)=O)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.