Using O=c1[nH]c2cnc3[nH]ccc3c2n1[C@H]1CCC[C@H](CO)C1 to produce O=C[C@H]1CCC[C@H](n2c(=O)[nH]c3cnc4[nH]ccc4c32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.