Using C=CP(=O)(OCC)OCC, COC(C(=O)c1ccccc1)c1ccccc1 to produce CCOP(=O)(CCC(OC)(C(=O)c1ccccc1)c1ccccc1)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.