Using COc1ccc(-c2ccc3[nH]c(C4CCN(C(=O)OC(C)(C)C)CC4)cc3c2)cc1OC to produce COc1ccc(-c2ccc3[nH]c(C4CCNCC4)cc3c2)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.