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