Using CC(C)(C)OC(=O)NCC(O)c1ccc(C(=O)NCc2ccccc2)cn1 to produce NCC(O)c1ccc(C(=O)NCc2ccccc2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.