Using COC(OC)(OC)c1nc2ccc(C(=O)O)cc2n1CCCNC(=O)OC(C)(C)C to produce COC(=O)c1nc2ccc(C(=O)O)cc2n1CCCN, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.