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