Using CC(C)(C)OC(=O)N1CCCNCC1, O=C(O)c1csc(-c2cn[nH]c2)c1 to produce CC(C)(C)OC(=O)N1CCCN(C(=O)c2csc(-c3cn[nH]c3)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.