Using CCOC(=O)C(C)(C)Oc1ccc(OCCc2nc(-c3ccccc3)oc2C)cc1COC to produce COCc1cc(OCCc2nc(-c3ccccc3)oc2C)ccc1OC(C)(C)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.