Using COc1ccc2c(c1)c(C1CN3CCC1CC3)c(C)n2C(C)=O to produce COc1ccc2[nH]c(C)c(C3CN4CCC3CC4)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.