Using O=C1OC(=O)c2ccccc21, CCN(CC)c1cccc(C)c1 to produce CCN(CC)c1ccc(C(=O)c2ccccc2C(=O)O)c(C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.