Using O=C1CCC(=O)O1, CC(C)(C)OC(=O)N1CCC(C2CCNCC2)CC1 to produce CC(C)(C)OC(=O)N1CCC(C2CCN(C(=O)CCC(=O)O)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.