Using Cc1cc(N2CCC(C(=O)N3CCN(C(=O)OC(C)(C)C)CC3)CC2)ncn1 to produce Cc1cc(N2CCC(C(=O)N3CCNCC3)CC2)ncn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.