Using COc1ccc(-c2nc(C3CCN(C(=O)OC(C)(C)C)CC3)n[nH]2)cn1 to produce COc1ccc(-c2nc(C3CCNCC3)n[nH]2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.