Using C=CCOC(=O)N1CC(O)C(C(=O)OC(C)(C)C)C[C@H]1C to produce C=CCOC(=O)N1CC=C(C(=O)OC(C)(C)C)C[C@H]1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.