Using COc1ccc(CN2CCC(NC(c3ccccc3)c3ccccc3)CC2=O)c(OC)c1 to produce COc1ccc(CN2CCC(N)CC2=O)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.