Using O=C1NC(=O)c2ccccc21, C=CCC1OC(C)(C)OC1CO to produce C=CCC1OC(C)(C)OC1CN1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.