Using CN(Cc1cccc(C(=O)O)c1)C(=O)OC(C)(C)C, O=C1CNc2ccccc2N1 to produce CN(Cc1cccc(C(=O)N2CC(=O)Nc3ccccc32)c1)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.