Using COC(=O)c1cccc(C(=O)[O-])c1, CC(C)(C)OC(=O)NCCN to produce COC(=O)c1cccc(C(=O)NCCNC(=O)OC(C)(C)C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.