Using CC[Mg]Br, COc1ccc(Oc2ccnc3cc(OC)c(OC)cc23)c(C=O)c1 to produce CCC(O)c1cc(OC)ccc1Oc1ccnc2cc(OC)c(OC)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.