Using O=C(NC1(C(=O)NC2(c3cc(CN4CCCC4)ccn3)CC2)CC1)OCc1ccccc1 to produce NC1(C(=O)NC2(c3cc(CN4CCCC4)ccn3)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.