Using O=C([O-])[O-], CCCCn1cc(C[C@H](NC(=O)OC(C)(C)C)C(=O)O)c2ccccc21 to produce CCCCn1cc(C[C@H](NC(=O)OC(C)(C)C)C(=O)OC)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.