Using C=C(OCC)c1cc(COCC2CC2)nc(Nc2ccc(-n3cnc(C)c3)c(OC)c2)n1 to produce COc1cc(Nc2nc(COCC3CC3)cc(C(C)=O)n2)ccc1-n1cnc(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.