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