Using COC(=O)C(NCCNC(=O)OC(C)(C)C)c1cccc(OC)c1 to produce COc1cccc(C(NCCNC(=O)OC(C)(C)C)C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.