Using COC(=O)CC(=Cn1c2c(c3cc(C)ccc31)CN(C)CC2)c1ccncc1 to produce COC(=O)CC(Cn1c2c(c3cc(C)ccc31)CN(C)CC2)c1ccncc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.