Using C[C@@H](Cn1ncc2ccc(O)cc21)NC(=O)OCc1ccccc1, C=O to produce C[C@@H](Cn1ncc2ccc(O)c(CO)c21)NC(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.