Using CCOC(=O)CP(=O)(OCC)OCC, Cc1ccc2c(c1)nc(N)c1ncc(CCc3ccc(C=O)cc3C)cc12 to produce CCOC(=O)/C=C/c1ccc(CCc2cnc3c(N)nc4cc(C)ccc4c3c2)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.