Using CCOC(=O)C1CCCN(C(=O)OC(C)(C)C)C1, NCC1CCCN1 to produce CC(C)(C)OC(=O)N1CCCC(C2=NCC3CCCN23)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.