Using CC(C)(C)OC(=O)N1CCC(C=O)CC1, CCOP(=O)(CC(=O)c1ccccc1)OCC to produce CC(C)(C)OC(=O)N1CCC(C=CC(=O)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.