Using CCOC(=O)[C@H](Cc1ccc(OCCCOc2ccc(I)cc2)cc1)OC, OB(O)c1ccc2[nH]ccc2c1 to produce CCOC(=O)[C@H](Cc1ccc(OCCCOc2ccc(-c3ccc4[nH]ccc4c3)cc2)cc1)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.