Using CC(C)Br, Oc1ccc(-c2nc(-c3ccc(O)cc3O)nc(-c3ccc(O)cc3O)n2)c(O)c1 to produce CC(C)Oc1ccc(-c2nc(-c3ccc(OC(C)C)cc3O)nc(-c3ccc(OC(C)C)cc3O)n2)c(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.