Using C[C@H]1CC[C@@H](C(=O)N2CCCC2)CN1C(=O)OC(C)(C)C to produce C[C@@H]1CC[C@H](C(=O)N2CCCC2)CN1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.