Using COc1ncc2nc(NC(c3ccccc3)(c3ccccc3)c3ccccc3)n(CCC(CO)CO)c2n1, c1ccncc1 to produce Nc1ncc2ncn(CCC(CO)CO)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.