Using CCCCn1c(C)c(C(=O)NC2CCN(Cc3ccccc3)CC2)c2cc(O)ccc21 to produce CCCCn1c(C)c(C(=O)NC2CCNCC2)c2cc(O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.