Using CCCc1nc2cc(NC(=O)OC(C)(C)C)ccc2n1CC(=O)OC(C)(C)C to produce CCCc1nc2cc(NC(=O)OC(C)(C)C)ccc2n1CC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.