Using CCOC(/C=C/c1cnc(N)c2c(-c3ccc(NC(=O)c4cc5ccccc5n4C)c(OC)c3)csc12)OCC to produce COc1cc(-c2csc3c(/C=C/C=O)cnc(N)c23)ccc1NC(=O)c1cc2ccccc2n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.