Using CC(C)(C)OC(=O)NCC1(O)CCN(CCCCCC(=O)c2ccccc2)CC1 to produce NCC1(O)CCN(CCCCCC(=O)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.