Using CCc1nc(C(=O)N2CCOC3(CCN(C(=O)OC(C)(C)C)CC3)C2)cs1 to produce CCc1nc(C(=O)N2CCOC3(CCNCC3)C2)cs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.