Using COc1ccc(N2CCN(c3c(C)c(C)c4c(c3C)C(=O)C(C)(C)O4)CC2)cc1 to produce COc1ccc(N2CCN(c3c(C)c(C)c4c(c3C)C(O)C(C)(C)O4)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.