Using COC(OC)N(C)C, CCOC(=O)CC(=O)C1=C(N2CCCC2)CN(C(=O)OC)C1 to produce CCOC(=O)C(=CN(C)C)C(=O)C1=C(N2CCCC2)CN(C(=O)OC)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.