Using CCOC(=O)CN1CCN(CCCc2c(C=O)[nH]c3c2CCCC3)CC1 to produce O=Cc1[nH]c2c(c1CCCN1CCN(CC(=O)O)CC1)CCCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.