Using CCCCc1nc(Cl)c(C(=O)O)n1Cc1cccc2c1ccn2-c1ccccc1C#N, O=C([O-])[O-] to produce CCCCc1nc(Cl)c(C(=O)OC(OC(=O)C(C)(C)C)C(C)C)n1Cc1cccc2c1ccn2-c1ccccc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.