Using CCOC(=O)CC1OB(O)c2cc(Oc3cnccn3)cc(O)c21, CC(C)I to produce CCOC(=O)CC1OB(O)c2cc(Oc3cnccn3)cc(OC(C)C)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.