Using CC(C)(C)OC(=O)N1CCC(=O)C1, CCOC(=O)CP(=O)(OCC)OCC to produce CCOC(=O)C=C1CCN(C(=O)OC(C)(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.