Using CCOC(OCC)OCC, CC1=C(C(=O)OCCC#N)C(c2cccc3c(=O)cc(C)oc23)c2c(c(C)c[nH]c2=O)N1 to produce CCOc1ncc(C)c2c1C(c1cccc3c(=O)cc(C)oc13)C(C(=O)OCCC#N)=C(C)N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.