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