Using O=C1NC(=O)c2ccccc21, CC(C)(C)OC(=O)C(C)(C)Oc1cccc(CCCOS(C)(=O)=O)c1 to produce CC(C)(C)OC(=O)C(C)(C)Oc1cccc(CCCN2C(=O)c3ccccc3C2=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.