Using CCOC(=O)CC(=O)[O-], CC(C)(C)OC(=O)NC(=NCCCCCCN)NC(=O)OC(C)(C)C to produce CCOC(=O)CC(=O)NCCCCCCNC(=NC(=O)OC(C)(C)C)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.