Using CC(C)(C)OC(=O)N1CCC2(CC(N3CCC(C(=O)O)CC3)C2)C1, CC1(N)CCC1 to produce CC1(NC(=O)C2CCN(C3CC4(CCN(C(=O)OC(C)(C)C)C4)C3)CC2)CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.