Using COC(=O)C1(Oc2ccc3c(c2)OCCn2cc(-c4nc(C)nn4C(C)C)nc2-3)CC1 to produce Cc1nc(-c2cn3c(n2)-c2ccc(OC4(C(=O)O)CC4)cc2OCC3)n(C(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.