Using COc1ccc(CC2NCCc3cc(OC)c(OC)c(O)c32)cc1, C=O to produce COc1ccc(CC2c3c(cc(OC)c(OC)c3O)CCN2C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.